C313212111133131211331333133313331311331333131133133313223313112331333123232321   >>    C31321211113313121133133313331333131133133313113313331322331311233133312323232   <<    C313212111133131211331333133313331311331333131133133313223313112331333123232323   >>      C313212111133131211331333133313331311331333131133133313223313112331333123232322   >>