C1111233131211111211113313331333133313331322322331312111112211311   >>    C111123313121111121111331333133313331333132232233131211111221131   <<    C1111233131211111211113313331333133313331322322331312111112211313   >>      C1111233131211111211113313331333133313331322322331312111112211312   >>