part2

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Now that you're starting to get a feel for the dance moves, you turn your attention to the dance as a whole.

Keeping the positions they ended up in from their previous dance, the programs perform it again and again: including the first dance, a total of one billion (1000000000) times.

In the example above, their second dance would begin with the order baedc, and use the same dance moves:

s1, a spin of size 1: cbaed.
x3/4, swapping the last two programs: cbade.
pe/b, swapping programs e and b: ceadb.
In what order are the programs standing after their billion dances?