@0


@1
MOV UP DOWN

@2


@3


@4
MOV LAST ANY
MOV ACC ANY
SWP
JRO RIGHT
MOV ANY ACC

@5
N:MOV ACC DOWN
L:MOV -2 LAST
ADD 1
SWP
JGZ N
JLZ L
MOV ANY LEFT
SAV
MOV LEFT ACC
SWP
MOV ANY LEFT
SUB LEFT

@6


@7


@8
MOV UP ACC
MOV -1 LAST
MOV UP ANY
C:SUB 1
MOV 3 RIGHT
JGZ C

@9
MOV ANY ANY

@10