C11112331312111112111133133313331333132323213331313331323221221   >>    C1111233131211111211113313331333133313232321333131333132322122   <<    C11112331312111112111133133313331333132323213331313331323221223   >>      C11112331312111112111133133313331333132323213331313331323221222   >>