" <------------------------- sam055.txt ---------------------------->
" <--- Reduce ------------------------------------------------------>
  v # 1 2 3 4 5
  a # 1 -1 1 -1 1
  +/v
  X/v
  S/v
  _/v
  +/L # v X a
  %/v
  X/L # v * a
  +/I0
  &/I0
)off