C313212111133131211331333133313331333133311233133313232212132313231   >>    C31321211113313121133133313331333133313331123313331323221213231323   <<    C313212111133131211331333133313331333133311233133313232212132313233   >>      C313212111133131211331333133313331333133311233133313232212132313232   >>