C313212111133131211331333133313331333133311233133313311231333132233322121   >>    C31321211113313121133133313331333133313331123313331331123133313223332212   <<    C313212111133131211331333133313331333133311233133313311231333132233322123   >>      C313212111133131211331333133313331333133311233133313311231333132233322122   >>