List of common catalysts

On March 12, 2023, Mitchell Riley determined the most common catalyses using 12 × 12 random soups.

If more than one catalyst works, the one with the smallest cell count is used. This means, for example, that snake-type catalysts use a snake even though a fishhook also works, and the "drifty eater 3" places above the regular eater 3 in cases where they both work.

Periodic catalysts, such as clocks and transparent blinkers, are in their own section.

Sequence	Pattern	Average uses per soup	Example reaction	Notes
Fishhook	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 4, y = 4, rule = B3/S23 2o$obo$2bo$2b2o!	12.082	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 5b2o$5b2o$5b2o$2b2o$bobo$bo$2o!	Fishhook tails as rocks are also included here. Snake-type reactions are not; they're listed in the "snake" entry.
Block	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 2, y = 2, rule = B3/S23 2o$2o!	5.458	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$2o7b2o$8b2o$9bo!	While most block catalysts are typical in that only the front two cells ever die, there are a decent number where only one or even zero of the four cells always remains on.
Snake	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 4, y = 2, rule = B3/S23 ob2o$2obo!	1.292	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] o$2obo$2bo2$2o$o$bo$2o!	Fishhooks also work, but since snakes are smaller, they're included here.
Eater 2	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 7, y = 7, rule = B3/S23 3bob2o$b3ob2o$o$b3ob2o$3bobo$3bobo$4bo!	1.097	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4bo$3bobo$3bobo$b3ob2o$o$b3ob2o$3bob2o$8b2o$8b2o!	The usefulness of eater 2 is greater than its number would suggest as it can perform eater 1 reactions from two directions, but this list only requires the catalyst to survive once.
Tub	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 3, y = 3, rule = B3/S23 bo$obo$bo!	0.977	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4b2o$bo2bo$obob3o$bo!	Tubs can also act as rocks for a line of four in some cases or to suppress a line of five.
Drifty eater 3	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 9b2o$4b2obo2bo$3bobob3o$3bobo$b3ob5o$o3bo4bo$2o2bobo$5b2o!	0.911	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] b2o$b2o6b2o$4b2obo2bo$3bobob3o$3bobo$b3ob5o$o3bo4bo$2o2bobo$5b2o!	The regular eater 3 works in more situations than the drifty eater 3 does, but since this one is smaller, it's listed first.
Two fishhooks	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2b2o3b2o$3bo3bo$3o5b3o$o9bo!	0.851	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 5bo$4bobo$3bo2bo$4bobo$5bo3$2b2o3b2o$3bo3bo$3o5b3o$o9bo!
Boat	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 3, y = 3, rule = B3/S23 bo$obo$2o!	0.796	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o2b2o$obobo$bo3bo$5bo!
Ship+fishhook	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 7, y = 8, rule = B3/S23 6bo$4b3o$3bo$3b2o2$2o$obo$b2o!	0.669	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 5b2o$5bobo$6b2o2bo$2b2o5bo$bobo6bo$bo9b2o$2o!
Block + fishhook	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$bo$bobo$2b2o2b2o$6b2o!	0.606	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$bo$bobo$2b2o2b2o$6b2o3$10bo$9b2o$8b2obo$9bobo$10b2o!
Bookend catalyst	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2b2o$2bo$3bo$4o$o$3b3o$3bo2bo$5b2o!	0.582	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o5b3o$2o3b2o2bo$5bo2b2o$5b3o$14b2o$12bo2bo$12b3o$9bo$9b4o$12bo$11bo$ 11b2o!
Snake bridge fishhook	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 8, y = 5, rule = B3/S23 2o$o5b2o$b3obobo$3bobo$4b2o!	0.557	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 6b2o$ob2obobo$2obobo$4b2o2$6bo$6bo$5bobo!
Unnamed	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4b2ob2o$3bobobobo$b3o3bobo$o4bobob3o$b3ob2obo3bo$3bo4bo2b2o$5b3o$4b2o!	0.548	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 5b2o$4bobo$4bo2bo$5b2o$6bo2$4b2ob2o$3bobobobo$b3o3bobo$o4bobob3o$b3ob 2obo3bo$3bo4bo2b2o$5b3o$4b2o!
Drifty eater 3 with worse clearance	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$o2bob2o$b3obobo$5bobo2bo$3b3ob4o$2bo3bo$2b2o2bobo$7b2o!	0.536	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 8b2o$2o6b2o$o2bob2o$b3obobo$5bobo2bo$3b3ob4o$2bo3bo$2b2o2bobo$7b2o!
Eater 3	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 12, y = 12, rule = B3/S23 9b2o$4b2o2bo2bo$bo2bo4bobo$obobo5bo$bo2bob2o$4bo2bo$5bo4bo$6b5o2$8bo$ 7bobo$8bo!	0.531	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 7bo$6bobo$7bo2$5b5o$5bo4bo$8bo2bo$8b2obo2bo$5bo5bobobo$4bobo4bo2bo$4bo 2bo2b2o$5b2o$b3o$ob2o$3bo!
Hook with tail	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 5, y = 4, rule = B3/S23 obo$2obo$3bo$3b2o!	0.522	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2b3o$3bo2$2bobo$bob2o$bo$2o!
Equivalent to BTS	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3b2obo$4bob3o$2bobo4bo$bob2o3b2o$bo$2o!	0.444	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$obo$obo$bo2$3b2obo$4bob3o$2bobo4bo$bob2o3b2o$bo$2o!
Snake bridge fishhook + fishhook	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2b2o$3bo3b2o$3o4bobob2o$o4bobob2obo$5b2o!	0.441	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2b3obo$5b2o$3bo3bo$3b3o$5bo4$2b2o$3bo3b2o$3o4bobob2o$o4bobob2obo$5b2o!
Eater 4	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2b2o$2bobo$4bo$4ob2o$o2bobobo$5bobo$5bo2b2o$4b2o4bo$6b5o$6bo4b2o$9b2o2bo$10bob2o$10bo$9b2o!	0.420	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 9b2o$b3o6bo$bobo6bob2o$b3o5b2o2bo$6bo4b2o$6b5o$4b2o4bo$5bo2b2o$5bobo$o 2bobobo$4ob2o$4bo$2bobo$2b2o!
Beehive push catalyst	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 17, y = 12, rule = B3/S23 6b2ob2o$7bobo$2b2obo5bob2o$bobob2o3b2obobo$o6bobo6bo$7o3b7o2$2b3o7b3o$ bo2bo3bo3bo2bo$b2o4bobo4b2o$7bobo$8bo!	0.417	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 6b2ob2o$7bobo$2b2obo5bob2o$bobob2o3b2obobo$o6bobo6bo$7o3b7o2$2b3o7b3o$ bo2bo3bo3bo2bo$b2o4bobo4b2o$7bobo$8bo4$7b3o$7bobo$7bobo!
Beehive push catalyst variant	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 10bo$9bobo$9bobo$10bo$5bo9bo$4bobo7bobo$3bobo4bo4bobo$3bo5bobo5bo$4bo 4bobo4bo$b3o2bo3bo3bo2b3o$o3b3o7b3o3bo$3o15b3o$3b6o3b6o$2bo6bobo6bo$3b obob2o3b2obobo$4b2obo5bob2o$9bobo$8b2ob2o!	0.399	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 6b2o$6bobo$4bobobo$3bobo2bob2o$2bo2bobobo2bo$2b2obobo3bobo$5bob2o3bo$ 2b2obo18bo$o2bobo17b2o$2o2bo4b2o4b2o7b2o$8bo2bo2bo2bo$2o2bo4b2o4b2o$o 2bobo$2b2obo$5bob2o3bo$2b2obobo3bobo$2bo2bobobo2bo$3bobo2bob2o$4bobobo $6bobo$6b2o!	Unlike the smaller beehive push catalyst form, this form only works when the line of three that reacts isn't centred.
Exposed eater 2	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3b2o$3b2o2$b3obo$o3b2o$b2o$3b2obo$3bob2o!	0.385	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 10bo$9bo$9b3o4$3b2o$3b2o2$b3obo$o3b2o$b2o$3b2obo$3bob2o!	Also works as a block catalyst.
Unnamed	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4b2o$5bo$o2bo$5o2$2b3o$bo2bo$b2o!	0.366	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4b2o$5bo$o2bo$5o2$2b3o3b4o$bo2bo2bobo$b2o4bo$8b4o!
Loaf spin	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] b2o3b2o$o2bo2b2o$bobo$2bo6b2o$10bo$5b2obo$5b2ob2o2$5b2ob2o$6bobo$6bobo $7bo!	0.344	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 8bo$2o6bo$o2b2o3bo$b3o$2bo4$8b2o3b2o$7bo2bo2b2o$8bobo$9bo6b2o$17bo$12b 2obo$12b2ob2o2$12b2ob2o$13bobo$13bobo$14bo!	There are several loaf spin catalysts that work different ways. This is just one of them.
Unnamed	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3b2o$3bo$2obo$o2b2o$b2o$3b2o$3bo$bobo$b2o!	0.335	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3b2o$3bo$2obo8bo$o2b2o6b2o$b2o7b2obo$3b2o6bobo$3bo8b2o$bobo$b2o!
PT8P	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 6bo$2obobobo$ob2ob2obo$8bo$8b2o!	0.300	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 6b3o$6bo$6b3o3$6bo$2obobobo$ob2ob2obo$8bo$8b2o!
Unnamed	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$obo$2bo2b2o$b2obobo$4bo$b4o$bo3b2o$2b3o2bo$5bo2bo$4b2ob2o$5bo$3bobo $3b2o!	0.297	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4b2o$4bobo$6bo2b2o$5b2obobo$8bo$5b4o$5bo3b2o$6b3o2bo$b2o6bo2bo$o2bo4b 2ob2o$2obo5bo$bobo3bobo$7b2o!
Unnamed	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3bo$2bobo$2bobo$b2ob2o$o6bo$bob2ob2o$2obo$3bob3o$3b2obo2bo$8b2o!	0.287	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 11bo$3bo5bobo$2bobo4b3o$2bobo4bo$b2ob2o$o6bo$bob2ob2o$2obo$3bob3o$3b2o bo2bo$8b2o!
Ship+fishhook+elevener	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 5b2o$5bobo$6b2o$2b2o$bobo5b2o$bo6bobo$2o6bo$6b3o$5bo$5b2o!	0.255	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 5b2o$5bobo7bo$6b2o6b3o$2b2o10bobo$bobo5b2o2b2o$bo6bobo$2o6bo$6b3o$5bo$ 5b2o!
Unnamed	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3b2o$2bobo$3bo2$b5o$2bo2bo$o$2o!	0.255	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] b2o$3o2b2o3b2o$4bo2bobobo$5b2o3bo2$8b5o$9bo2bo$7bo$7b2o!	Can eat gliders.

Period-2 catalysts

On February 27, 2023, Mitchell Riley determined the most common period-2 catalysts, but using a less rigorous algorithm than the stable catalyst algorithm approximately two weeks later.

Sequence	Pattern	Example reaction	Notes
Toad	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] b2o$o$3bo$b2o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 5b3o$4b3o$3o$2bo$3bo$2bo!
Clock + fishhook	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] bo$2b2o$2o$2bo3$2b2o$bobo$bo$2o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] bo$2b2o$2o4bo$2bo2bo$5bo$5bo$2b2o2bo$bobo$bo$2o!
Clock	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2bo$obo$bobo$bo!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3b2o$3bobo$5b2o2$2bo$2o$2b2o$bo!
Killer toads	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 4, y = 7, rule = B3/S23 b3o$3o4$3o$b3o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] b2o3b2o$o7bo$3bobo$b2o3b2o3$3b3o$3bobo$3b3o!
Toad + fishhook	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] b2o6bo$o6b3o$3bo2bo$b2o3b2o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] b2o6bo$o6b3o$3bo2bo$b2o3b2o3$3b3o$3bobo$3b3o!
Foxclock	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4bo$5b2o$3b2o$5bo3$4b3o$2bo$2o2b2o2$2bo2bo$3bo$3bo!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4bo$5b2o$3b2o$5bo$9b2o$8b2o$4b3o$2bo$2o2b2o2$2bo2bo$3bo$3bo!
Blinker	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 3o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] bo$bo$bo8$2o$b2o$2b2o!
Blinker + fishhook + eater bridge eater	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$bo$bobo$2b2o$6bo$6bo$6bo3$4b2o$2obobo$ob2obobo$6b2o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 2o$bo$bobo$2b2o$6bo3b2o$6bo2b3o$6bo3b2o3$4b2o$2obobo$ob2obobo$6b2o!	Odd periods only. This was discovered after the rest and may not be less common than the ones above it in the list.
Odd traffic stop	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] x = 17, y = 17, rule = B3/S23 4b2o$5bo$5bobo$6b2o3bo$11bo$11bo$3b2o$3bo3b3o3b3o$2obo$o2b3o$b2o3bo$3b 4o6b2o$3bo9bo$bobob2o7b3o$b2o2bo10bo$5bobo$6b2o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4b2o$5bo$5bobo$6b2o$10b3o4b3o$17bo2bo$b2o5bo5bo2b3o$bobo4bo5bo$3bo4bo 5bo$3b3o$b2o3bo$o2b4o6b2o$2obo9bo$3bob2o7b3o$3bobo10bo$2b2obobo$6b2o!	Odd periods only. This was discovered after the rest and may not be less common than the ones above it in the list.
Odd traffic stop plus loaf	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 4b2o$5bo$5bobo$6b2o$10b3o$19bo$b2o5bo5bo3bobo$bobo4bo5bo3bo2bo$3bo4bo 5bo4b2o$3b3o$b2o3bo$o2b4o6b2o$2obo9bo$3bob2o7b3o$3bobo10bo$2b2obobo$6b 2o!	#C [[ THUMBNAIL THUMBLAUNCH THUMBSIZE 4 THEME 6 GRID GRIDMAJOR 0 ]] 20b3o$4b2o17b2o$5bo17b2o$5bobo$6b2o$10b3o$19bo$b2o5bo5bo3bobo$bobo4bo 5bo3bo2bo$3bo4bo5bo4b2o$3b3o$b2o3bo$o2b4o6b2o$2obo9bo$3bob2o7b3o$3bobo 10bo$2b2obobo$6b2o!	Odd periods only. This was discovered after the rest and may not be less common than the ones above it in the list.

See also

• Tutorials/Catalyses