C1111233131211111211113313331333133313331322322331312111112121221   >>    C111123313121111121111331333133313331333132232233131211111212122   <<    C1111233131211111211113313331333133313331322322331312111112121223   >>      C1111233131211111211113313331333133313331322322331312111112121222   >>