C11112331312111112111133132313331333133313232213331333132322233121   >>    C1111233131211111211113313231333133313331323221333133313232223312   <<    C11112331312111112111133132313331333133313232213331333132322233123   >>      C11112331312111112111133132313331333133313232213331333132322233122   >>