C313212111133131211331333133313331333133311233133313232213123133311   >>    C31321211113313121133133313331333133313331123313331323221312313331   <<    C313212111133131211331333133313331333133311233133313232213123133313   >>      C313212111133131211331333133313331333133311233133313232213123133312   >>