C1111233131211111211113313331333133313331322322331312111113331322232213223331   >>    C111123313121111121111331333133313331333132232233131211111333132223221322333   <<    C1111233131211111211113313331333133313331322322331312111113331322232213223333   >>      C1111233131211111211113313331333133313331322322331312111113331322232213223332   >>