C313212111133131211331333133313331333133313231333133313331333133313233232111   >>    C31321211113313121133133313331333133313331323133313331333133313331323323211   <<    C313212111133131211331333133313331333133313231333133313331333133313233232113   >>      C313212111133131211331333133313331333133313231333133313331333133313233232112   >>