C313212111133131211331333133313331333133313223313331313331312121   >>    C31321211113313121133133313331333133313331322331333131333131212   <<    C313212111133131211331333133313331333133313223313331313331312123   >>      C313212111133131211331333133313331333133313223313331313331312122   >>