C13112133313331323321333133313331333133313331313331333131121323233213231   >>    C1311213331333132332133313331333133313331333131333133313112132323321323   <<    C13112133313331323321333133313331333133313331313331333131121323233213233   >>      C13112133313331323321333133313331333133313331313331333131121323233213232   >>