C11112331312111112111133132313331333133313232213331323211113121   >>    C1111233131211111211113313231333133313331323221333132321111312   <<    C11112331312111112111133132313331333133313232213331323211113123   >>      C11112331312111112111133132313331333133313232213331323211113122   >>