Spaceships that avoid B1e or B2a

[LaundryPizza03]

Interestingly, there exist several spaceships that work in relativistic (B1e or B2a) and nonrelativistic rules (without B1e or B2a) because they avoid those transitions. (No spaceships can avoid both B1e and B2a because no stable patterns can exist in rules with B1e2a.) I first discovered one for B1e sometime last summer, and later two more for B2a.

B1e:

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#C This is the one I discovered first. It travels at c/2 orthogonal.
x = 3, y = 4, rule = B1e3ai6k/S2e3nr4a5i
2o$3o$3o$2o!

B2a:

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#C This is the second ship discovered, and the first for B2a. It travels at c/2 orthogonal.
x = 7, y = 4, rule = B2ac3akn4ikt/S0
2bobo$b2ob2o$o5bo$2bobo!

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#C I discovered this one just today. It travels at c/3 diagonal.
x = 4, y = 4, rule = B2ck3any4t/S02cn4w
bobo$2o2$o!

I'll bet that there are more, and that there is a B1e-avoiding ship that travels diagonally.

[AforAmpere]

Here's some I found a while ago:
http://www.conwaylife.com/forums/viewto ... b1e#p66813

[LaundryPizza03]

Here's some I found a while ago:
http://www.conwaylife.com/forums/viewto ... b1e#p66813

How did you find all those ships? Where may I find this program, if you used an automated search?