# Busy beaver: write as many 1's as possible - 5 states
# start with empty tape (one space)
0 1 1 r 2
0 _ 1 l 1
1 1 1 l 1
1 _ 1 l 2
2 1 _ r 4
2 _ 1 l 3
3 1 1 r 3
3 _ 1 r 0
4 1 _ r 0
4 _ 1 r 5