@1
MOV UP, RIGHT

@2
MOV LEFT, DOWN

@6
MOV UP, ACC
SAV
MOV 17, ACC
SWP
Y: SWP
MOV ACC, DOWN
SUB 1
SWP
SUB 1
JNZ Y
MOV -1, DOWN

@9
Y: MOV UP, ACC
JLZ X
SWP
MOV ACC, DOWN
SWP
MOV ACC, DOWN
MOV 3, DOWN
MOV -1, DOWN
JMP Y
X: SWP
ADD 1
SWP
