C313212111133131211331333133313331333133311233132313331333132323221211   >>    C31321211113313121133133313331333133313331123313231333133313232322121   <<    C313212111133131211331333133313331333133311233132313331333132323221213   >>      C313212111133131211331333133313331333133311233132313331333132323221212   >>