C1111133313331323223313331333133313331323131211113313112121111133311111   >>    C111113331333132322331333133313331333132313121111331311212111113331111   <<    C1111133313331323223313331333133313331323131211113313112121111133311113   >>      C1111133313331323223313331333133313331323131211113313112121111133311112   >>