@1
MOV UP, RIGHT

@2
MOV LEFT, DOWN
SWP
MOV ACC, DOWN
SWP
MOV ACC, DOWN
SAV
MOV UP, ACC
MOV ACC, DOWN

@6
MOV UP, DOWN
SWP
MOV ACC, DOWN
SWP
MOV ACC, DOWN
SWP
MOV UP, ACC
MOV ACC, DOWN
MOV UP, DOWN
MOV UP, DOWN

@9
S: MOV UP, ACC
SAV
ADD 4
JEZ PK
L1: MOV UP, NIL
SUB 1
JGZ L1
PK: MOV UP, DOWN
SWP
JEZ S
L2: MOV UP, NIL
ADD 1
JLZ L2
