C11112331312111112111133133313331333132323213331333131113123131   >>    C1111233131211111211113313331333133313232321333133313111312313   <<    C11112331312111112111133133313331333132323213331333131113123133   >>      C11112331312111112111133133313331333132323213331333131113123132   >>