C11231323321111331312111133133313331323223313231333131133132333112331   >>    C1123132332111133131211113313331333132322331323133313113313233311233   <<    C11231323321111331312111133133313331323223313231333131133132333112333   >>      C11231323321111331312111133133313331323223313231333131133132333112332   >>