C11112331312111112111133132313331333133313232213331323133311331   >>    C1111233131211111211113313231333133313331323221333132313331133   <<    C11112331312111112111133132313331333133313232213331323133311333   >>      C11112331312111112111133132313331333133313232213331323133311332   >>