C313212111133131211331333133313331333133311233133313311231333132232211   >>    C31321211113313121133133313331333133313331123313331331123133313223221   <<    C313212111133131211331333133313331333133311233133313311231333132232213   >>      C313212111133131211331333133313331333133311233133313311231333132232212   >>