C13112133313331323321333133313331333133313113313331333131133133313231333231   >>    C1311213331333132332133313331333133313331311331333133313113313331323133323   <<    C13112133313331323321333133313331333133313113313331333131133133313231333233   >>      C13112133313331323321333133313331333133313113313331333131133133313231333232   >>