C:/Perl_64/bin\perl.exe  d:/tmp/pascale_path.pl 
[
  [0, 0, "start"],
  [1, 0, "left"],
  [2, 0, "left"],
  [3, 1, "right"],
]
[
  [0, 0, "start"],
  [1, 0, "left"],
  [2, 1, "right"],
  [3, 1, "left"],
]
[
  [0, 0, "start"],
  [1, 1, "right"],
  [2, 1, "left"],
  [3, 1, "left"],
]

Compilation finished at Thu Mar 22 12:41:53