C13112133313331323321333133313331333133313331333133313331312322321111123122311   >>    C1311213331333132332133313331333133313331333133313331333131232232111112312231   <<    C13112133313331323321333133313331333133313331333133313331312322321111123122313   >>      C13112133313331323321333133313331333133313331333133313331312322321111123122312   >>