@1
SAV
SUB UP
JLZ P
SWP
SAV
P: MOV ACC, RIGHT
SWP
ADD 8

@2
SAV
SUB UP
JLZ K
MOV ACC, DOWN
MOV LEFT, NIL
JMP E
K: MOV LEFT, DOWN
E: SWP
ADD 8

@5
SAV
SUB UP
MOV ACC, DOWN
SWP
ADD 8

@7
MOV UP, DOWN
