C313212111133131211331333133313331333133311233133313232213131212111   >>    C31321211113313121133133313331333133313331123313331323221313121211   <<    C313212111133131211331333133313331333133311233133313232213131212113   >>      C313212111133131211331333133313331333133311233133313232213131212112   >>