C111123313121111121111331333133313331333132232233131211111333131121121311   >>    C11112331312111112111133133313331333133313223223313121111133313112112131   <<    C111123313121111121111331333133313331333132232233131211111333131121121313   >>      C111123313121111121111331333133313331333132232233131211111333131121121312   >>