C313212111133131211331333133313331333133311233133313232233223231   >>    C31321211113313121133133313331333133313331123313331323223322323   <<    C313212111133131211331333133313331333133311233133313232233223233   >>      C313212111133131211331333133313331333133311233133313232233223232   >>