C13112133313331323321333133313331333133313113313331333222333131   >>    C1311213331333132332133313331333133313331311331333133322233313   <<    C13112133313331323321333133313331333133313113313331333222333133   >>      C13112133313331323321333133313331333133313113313331333222333132   >>