C11112331312111112111133133313331333132313331223213331323112123231   >>    C1111233131211111211113313331333133313231333122321333132311212323   <<    C11112331312111112111133133313331333132313331223213331323112123233   >>      C11112331312111112111133133313331333132313331223213331323112123232   >>