C313212111133131211331333133313331333133313331322133311211312121   >>    C31321211113313121133133313331333133313331333132213331121131212   <<    C313212111133131211331333133313331333133313331322133311211312123   >>      C313212111133131211331333133313331333133313331322133311211312122   >>