C1111133313331323223313331333133313331333131211113313331323131133131121111   >>    C111113331333132322331333133313331333133313121111331333132313113313112111   <<    C1111133313331323223313331333133313331333131211113313331323131133131121113   >>      C1111133313331323223313331333133313331333131211113313331323131133131121112   >>