C111112111133131121133133313331333133313331323133313331333133313221213232211   >>    C11111211113313112113313331333133313331333132313331333133313331322121323221   <<    C111112111133131121133133313331333133313331323133313331333133313221213232213   >>      C111112111133131121133133313331333133313331323133313331333133313221213232212   >>