Prog

For the ostrich Handy Board 1:

to prima
c, onfor 15 rd onfor 15 rd
end

to corps
a, onfor 30 rd onfor 30 rd
end

to ostrich
b, on
forever, [prima]
forever [corps]
wait 80
stoprules
b, off
irsend 10
d, on
end

For the hippo Handy Board 2

to hippo
waituntil [ir = 10]
b, onfor 2
a, onfor 60
end

For the elephant, alligator, and combination on Handy Board 3

to alligator
waituntil [switch 15]
c, onfor 60 wait 10
forever [loop [b, onfor 20 wait 30]]
forever [loop [a, onfor 27 a, rd onfor 27]]
wait 90
stoprules
d, onfor 90
end