@1
MOV UP RIGHT

@2
MOV 999 ACC
SUB UP
SUB LEFT
MOV ACC DOWN

@5
MOV UP ACC
JLZ N
P: SUB 2
JLZ E
MOV 3 DOWN
JMP P
N: MOV 1 DOWN
ADD 2
JLZ N
E: MOV 5 DOWN

@9
S: MOV 499 ACC
L: JRO UP
ADD 1
JMP L
SUB 1
JMP L
MOV ACC DOWN
JMP S
