@0
S: MOV UP, ACC
SAV
MOV 6, ACC
L: SWP
MOV ACC, RIGHT
MOV ACC, RIGHT
SWP
SUB 1
JGZ L

@1
A: MOV UP, ACC
JEZ Z
SUB LEFT
JGZ KEEP
MOV LEFT, ACC
JMP C
Z: SUB LEFT
KEEP: ADD LEFT
C: SUB RIGHT
JLZ N
MOV RIGHT, DOWN
JMP A
N: ADD RIGHT
MOV ACC, DOWN

@2
S: MOV UP, ACC
SAV
MOV 6, ACC
L: SWP
MOV ACC, LEFT
MOV ACC, LEFT
SWP
SUB 1
JGZ L

@4
MOV UP, DOWN

@8
MOV UP, DOWN
