C313212111133131211331333133313331333133311233133313221211113313213231   >>    C31321211113313121133133313331333133313331123313331322121111331321323   <<    C313212111133131211331333133313331333133311233133313221211113313213233   >>      C313212111133131211331333133313331333133311233133313221211113313213232   >>