C1111133313331323223313331333133313331323131211113313221333112121212111   >>    C111113331333132322331333133313331333132313121111331322133311212121211   <<    C1111133313331323223313331333133313331323131211113313221333112121212113   >>      C1111133313331323223313331333133313331323131211113313221333112121212112   >>