@0
MOV UP DOWN

@1
MOV UP DOWN

@3
L:MOV UP ACC
MOV ACC RIGHT
JLZ N
MOV RIGHT NIL
MOV ACC DOWN
JMP L
N:MOV RIGHT DOWN

@4
L:MOV UP ACC
JLZ N
MOV LEFT NIL
MOV ACC LEFT
MOV ACC DOWN
JMP L
N:MOV LEFT DOWN
MOV ACC LEFT

@7
MOV UP DOWN

@8
MOV UP DOWN
