@0
MOV UP RIGHT

@1
N:MOV ACC LAST
MOV ACC LAST
SWP
JRO DOWN
MOV LEFT ACC
SWP
MOV RIGHT ACC
NEG
S:MOV UP ANY

@2
MOV UP LEFT

@3


@4
MOV 1 UP
E:MOV UP ACC
S:NEG
SUB UP
JGZ R
SUB ACC
R:ADD UP
MOV ACC UP
JLZ S
MOV ACC DOWN
JGZ E

@5


@6


@7


@8
MOV UP DOWN

@9


@10