C313212111133131211331333133313331333133313331333133313231333133313123222333111   >>    C31321211113313121133133313331333133313331333133313331323133313331312322233311   <<    C313212111133131211331333133313331333133313331333133313231333133313123222333113   >>      C313212111133131211331333133313331333133313331333133313231333133313123222333112   >>