C111123313121111121111331333133313331333131233133313113323221221   >>    C11112331312111112111133133313331333133313123313331311332322122   <<    C111123313121111121111331333133313331333131233133313113323221223   >>      C111123313121111121111331333133313331333131233133313113323221222   >>