C313212111133131211331333133313331333133311233133313311231333132313221221121   >>    C31321211113313121133133313331333133313331123313331331123133313231322122112   <<    C313212111133131211331333133313331333133311233133313311231333132313221221123   >>      C313212111133131211331333133313331333133311233133313311231333132313221221122   >>