C313212111133131211331333133313331333133313231333133313331333131122112323231211   >>    C31321211113313121133133313331333133313331323133313331333133313112211232323121   <<    C313212111133131211331333133313331333133313231333133313331333131122112323231213   >>      C313212111133131211331333133313331333133313231333133313331333131122112323231212   >>