F.decide 1
DEC Y.decide 5
SHOW
SHOW
F.decide 2
DEC Y.yoursef 5
SHOW
SHOW

MASK 400 400 400

LOOP 6
  INC F.decide 1
  INC Y.decide 5
  SHOW
  SHOW
ENDLOOP

DEC Y.decide 5
F.decide 0
SHOW

LOOP 3
     INC F.decide 1
     DEC Y.decide 5
     SHOW
     SHOW
ENDLOOP

F.decide 0
DEC Y.decide 5
SHOW
SHOW

ENDSCRIPT
