C313212111133131211331333133313331333133313331323331323222212131   >>    C31321211113313121133133313331333133313331333132333132322221213   <<    C313212111133131211331333133313331333133313331323331323222212133   >>      C313212111133131211331333133313331333133313331323331323222212132   >>