C111123313121111121111331333133313331322121111331333131133133313331323132313211   >>    C11112331312111112111133133313331333132212111133133313113313331333132313231321   <<    C111123313121111121111331333133313331322121111331333131133133313331323132313213   >>      C111123313121111121111331333133313331322121111331333131133133313331323132313212   >>