C111123313121111121111331333133313331322121111331333133313331313231311211   >>    C11112331312111112111133133313331333132212111133133313331333131323131121   <<    C111123313121111121111331333133313331322121111331333133313331313231311213   >>      C111123313121111121111331333133313331322121111331333133313331313231311212   >>