C313212111133131211331333133313331333133311233133313311221111211   >>    C31321211113313121133133313331333133313331123313331331122111121   <<    C313212111133131211331333133313331333133311233133313311221111213   >>      C313212111133131211331333133313331333133311233133313311221111212   >>