@1
MOV UP RIGHT

@2
MOV LEFT ACC
JEZ A
SAV
L: MOV UP NIL
SUB 1
JNZ L
SWP
A: SUB LEFT
C: MOV UP DOWN
JEZ Z
ADD 1
JMP C
Z: MOV 0 DOWN
D: MOV UP ACC
JNZ D

@6
MOV UP DOWN

@9
MOV UP DOWN
