C11112331312111112111133133313331333132323213331313331322331311221123131   >>    C1111233131211111211113313331333133313232321333131333132233131122112313   <<    C11112331312111112111133133313331333132323213331313331322331311221123133   >>      C11112331312111112111133133313331333132323213331313331322331311221123132   >>