C313212111133131211331333133313331333133313231333133313331333133311233223231   >>    C31321211113313121133133313331333133313331323133313331333133313331123322323   <<    C313212111133131211331333133313331333133313231333133313331333133311233223233   >>      C313212111133131211331333133313331333133313231333133313331333133311233223232   >>