C313212111133131211331333133313331333133313231333133313331333133313112211212131   >>    C31321211113313121133133313331333133313331323133313331333133313331311221121213   <<    C313212111133131211331333133313331333133313231333133313331333133313112211212133   >>      C313212111133131211331333133313331333133313231333133313331333133313112211212132   >>