C13112133313331323321333133313331333133313331323132313331121211   >>    C1311213331333132332133313331333133313331333132313231333112121   <<    C13112133313331323321333133313331333133313331323132313331121213   >>      C13112133313331323321333133313331333133313331323132313331121212   >>