@1
S: MOV UP ACC
MOV ACC DOWN
SUB UP
JEZ E
ADD 2
JMP T
B: MOV -2 DOWN
ADD 2
T: JLZ B
SUB 2
MOV ACC DOWN
E: MOV 1 DOWN

@2
MOV UP DOWN

@5
MOV UP RIGHT

@6
MOV LEFT ACC
JEZ O
L: MOV UP NIL
SUB 1
JNZ L
JMP O
MOV UP DOWN
O: MOV UP DOWN
JRO LEFT
MOV 0 DOWN
D: MOV UP ACC
JNZ D

@9
MOV UP DOWN
