@1
MOV UP DOWN

@5
MOV UP ACC
MOV ACC RIGHT
MOV ACC RIGHT
MOV ACC DOWN
MOV ACC DOWN

@6
L:SWP
S:SAV
SUB LEFT
JLZ N
MOV LEFT ACC
JEZ E
JMP L
N:MOV LEFT ACC
JMP S
E:SWP
MOV ACC DOWN

@8
R:MOV 999 ACC
L:SAV
SUB UP
JGZ N
MOV UP NIL
SWP
JMP L
N:MOV UP ACC
JNZ L
E:SWP
MOV ACC DOWN

@9
MOV UP DOWN
