C313212111133131211331333133313331333133311233133313221211111333133313232332311   >>    C31321211113313121133133313331333133313331123313331322121111133313331323233231   <<    C313212111133131211331333133313331333133311233133313221211111333133313232332313   >>      C313212111133131211331333133313331333133311233133313221211111333133313232332312   >>