C11112331312111112111133132313331333133313232213331333132323323221   >>    C1111233131211111211113313231333133313331323221333133313232332322   <<    C11112331312111112111133132313331333133313232213331333132323323223   >>      C11112331312111112111133132313331333133313232213331333132323323222   >>