C313212111133131211331333133313331333133311233133313121133223323221   >>    C31321211113313121133133313331333133313331123313331312113322332322   <<    C313212111133131211331333133313331333133311233133313121133223323223   >>      C313212111133131211331333133313331333133311233133313121133223323222   >>