C13112133313331323321333133313331323133313331333133313231121131231   >>    C1311213331333132332133313331333132313331333133313331323112113123   <<    C13112133313331323321333133313331323133313331333133313231121131233   >>      C13112133313331323321333133313331323133313331333133313231121131232   >>