ripp ripr rips riri rirs risc risd risi riso risp riss rnco rncp rncs rndc rndp rnds rnin rnod rnsp rocc roco rocs rodd rodi rodo rods roid roin roio roir rois ronc rond roni rono rons rood rooi roon roop roor roos ropo rops rorc rori roro rosc rosi roso rosp ross rpcs rpdp rpii rpon rpos rppn rpps rrrr rrsp rscc rscn rscs rsdd rsds rsid rsis rsnn rsno rsnr rsos rspo rsps s-ic s-ii s-os sccc sccp sccs scdc scdp scds sci- scic scid scin scio scip scir scis scnd scnr scon scoo scop scor scpi scpo scps scr- scrc scri scrn scrs scsc scsd scsi scsn scso scsr sdcc sdco sddc sdds sdic sdio sdpr sdps sdrc sdrs sdsc sdss sicc sici sico sicp sics sidd sidi sido sidr sids sind sini sinn sino sinp sins siod sion siop sior sios sipc sipi sipo sipp sips sirc siri siro sirp sirr sirs sisc sisd sisi siss sncc snco sncp snid snip snir snns snoc snod snoo snop snor snos snpo snpp snrs snsd soci soco socr socs sodd sodo sods soic soin soir sois son- sond soni sono sons sood soon soop soor soos sopd sopi sopo sopp sops sord sori sorn soro sorr sors sosi soso soss spcc spco spcs spdc spdp spdr spic spin spio spip spir spis spns spoc spod spon spoo spop spor spos sppd spps sprd spri spro sprs spsd spso spsp spss srcc sris srni srnn srno sros srpc srps srsd srsp sscc ssci sscp sscs ssdc ssdd ssdp ssid ssin ssis ssns ssoc ssop sspc sspo ssps ssrc ssri ssrs sssc sssi ssss