#expect 5
#expect 9
#expect 5
#expect 9
#expect 5
#expect 9

#ship fifo : Fifo
#ship debug : Debug

fifo.in:
  literal 9;
  [6] deliver;

debug.in:
  [*] take, deliver;

fifo.out:
  clog;
  literal 5,       requeue 3 times;
  sendto debug.in, requeue 3 times;
  take,            requeue 3 times;
  sendto debug.in, requeue 3 times;
  unclog;