event log

>  0   (sequence (til "bcde" (capture (to -1))) (capture (to -1)))
>  1   (til "bcde" (capture (to -1)))
>  2   "bcde"
   2 > "bcde"
>  3   "bcde"
   3 > "bcde"
>  4   (capture (to -1))
>  5   (to -1)
>  6   -1
   6 > -1
>  7   -1
   7 > -1
   5 > (to -1)
   4 > (capture (to -1))
   1 > (til "bcde" (capture (to -1)))
>  8   (capture (to -1))
>  9   (to -1)
> 10   -1
  10 > -1
> 11   -1
  11 > -1
   9 > (to -1)
   8 > (capture (to -1))
   0 > (sequence (til "bcde" (capture (to -1))) (capture (to -1)))