C1111233131211111211113313331333133313331322322331312111113331311331323223331   >>    C111123313121111121111331333133313331333132232233131211111333131133132322333   <<    C1111233131211111211113313331333133313331322322331312111113331311331323223333   >>      C1111233131211111211113313331333133313331322322331312111113331311331323223332   >>