C313212111133131211331333133313331333133311233133313311221323311211   >>    C31321211113313121133133313331333133313331123313331331122132331121   <<    C313212111133131211331333133313331333133311233133313311221323311213   >>      C313212111133131211331333133313331333133311233133313311221323311212   >>