C11112331312111112111133133313331333132323133313331313331311312121121   >>    C1111233131211111211113313331333133313232313331333131333131131212112   <<    C11112331312111112111133133313331333132323133313331313331311312121123   >>      C11112331312111112111133133313331333132323133313331313331311312121122   >>