rcbo rccb rccc rccs rcep rcic rcis rcos rcpi rcpo rcps rcsc rcsi rcss rebb rebe rebo rebs recc rece reci recp recr recs reeb reep rees reii reir reis reop reos repe repi repo repp repr reps rere reri rero rers rese resi reso resp ress rib- ribe ribo ribs ricc rice rico rics riep rier ries riis rios ripe ripi ripp ripr rips rire riri rirs risc rise risi riso risp riss rob- robb robe robi robo robs rocc roce roco rocs roer roes roio roir rois roob rooi roop roor roos rope ropo rops rorc rore rori roro rosc rose rosi roso rosp ross rpcs rpii rpob rpoe rpos rpps rrrr rrsp rsbi rscc rscs rsee rsis rsos rspb rspo rsps rsre s-ib s-ic s-ii s-os sbbs sbcc sbcs sber sbic sbor sbse sbsi sbsp scbi sccc scce sccp sccs scec scee scep scer sci- scic scie scio scip scir scis scob scoo scop scor scpb scpe scpi scpo scps scr- scrc scre scri scrs scsc scsi scso scsr se-c se-e se-i se-o se-s sebe sebi sebo sebs sec- secc sece seco secr secs seeb seec seep seer sees seie seii seip seir seis seoc seoi seop sepe sepi sepo sepp sepr seps serb serc sere seri sero serp serr sers sesc sese sesi seso sess sibc sibe sibi sibo sibs sicc sice sici sico sicp sics siec sier sies sioe siop sior sios sipc sipe sipi sipo sipp sips sirc sire siri siro sirp sirr sirs sisc sise sisi siss sobe sobo sobp sobr sobs soce soci soco socr socs soec soeo soep soes soic soie soir sois soop soor soos sope sopi sopo sopp sops sorb sore sori soro sorr sors sose sosi soso soss spcc spco spcs speb spec spee sper spes spib spic spie spio spip spir spis spoc spoo spop spor spos spps spri spro sprs spse spso spsp spss srbc srcc sreb srec sreo sres srib sris sros srpc srps srsp ssbr sscc ssce ssci sscp sscs ssec ssee ssep sses ssis ssoc ssop sspc sspe sspo ssps ssrc ssri ssrs sssb sssc sssi ssss