C13112133313331323321333133313331333133313331311331323133313331313231321   >>    C1311213331333132332133313331333133313331333131133132313331333131323132   <<    C13112133313331323321333133313331333133313331311331323133313331313231323   >>      C13112133313331323321333133313331333133313331311331323133313331313231322   >>