@4
MOV 29 ACC
P:MOV 1 RIGHT
SUB 1
JNZ P
MOV 0 RIGHT
MOV 29 ACC
N:MOV -1 RIGHT
SUB 1
JNZ N
MOV 2 RIGHT

@5
S:MOV ACC DOWN
ADD LEFT
JLZ A
SUB 4
JEZ S
A:ADD 4

@9
MOV 0 DOWN
MOV ACC DOWN
SAV
MOV 30 ACC
L:MOV UP DOWN
SUB 1
JNZ L
MOV -1 DOWN
SWP
ADD 1
