C11112331312111112111133132313331333133313232213331323132232311   >>    C1111233131211111211113313231333133313331323221333132313223231   <<    C11112331312111112111133132313331333133313232213331323132232313   >>      C11112331312111112111133132313331333133313232213331323132232312   >>