C313212111133131211331333133313331333133311233133313232212112311   >>    C31321211113313121133133313331333133313331123313331323221211231   <<    C313212111133131211331333133313331333133311233133313232212112313   >>      C313212111133131211331333133313331333133311233133313232212112312   >>