@1
MOV UP, RIGHT

@2
S: MOV LEFT, ACC
SAV
K: JEZ M
MOV UP, NIL
SUB 1
JMP K
M: SWP
SUB LEFT
O: MOV UP, DOWN
ADD 1
JLZ O
MOV UP, DOWN
E: MOV UP, ACC
JNZ E
MOV ACC, DOWN

@6
MOV UP, DOWN

@9
MOV UP, DOWN
