issa issc issi issr isss issu isua isus iucc iuds iuiu iura iusd iuss raab raad raas raba rabb rabi rabs rabu rac- raca racc raci racs racu rada radc radd radr rads radu raia raic raid raii rair rais raiu rara rarb rari rars rasa rasc rasd rasi rass rasu raua raub rauc raud raus rbbb rbbr rbbs rbds rbis rbsd rbss rcac rcas rcbc rccb rccc rccs rcdc rcds rcic rcid rcis rcrd rcsa rcsc rcsd rcsi rcss rdac rdas riaa riab riad riai rias riau rib- riba ribs ribu rica ricc rics rida ridc ridd ridi rids riia riis riri rirs risa risc risd risi riss risu rius rrad rras rrrr rsaa rsai rsbi rscc rscs rsdd rsds rsid rsis rssa rsua ruad ruas ruba rubb rubi rubs rubu ruca ruci ruda rudd rudi ruds ruid ruis rura rurc rurd ruri rurs ruru rusa rusi russ rusu ruud s-ib s-ic s-ii sa-c saab saac saad saar saas saba sabb sabc sabi sabr sabs sabu saca sacc sacd saci sacr sacs sacu sada sadb sadc sadd sadi sadr sads sadu saia saic said sair sais sara sarc sard sari sarr sars saru sasa sasc sasd sasi sass saua sauc saud saur saus sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbds sbia sbic sbsa sbsd sbsi sbus scaa scab scac scad scai scar scas scba scbi sccc sccs scda scdc scds sci- scia scic scid scir scis scr- scra scrc scri scrs scsa scsc scsd scsi scsr scsu scua scub scud scur sdau sdba sdcc sddc sdds sdib sdic sdrc sdrs sdsc sdss sdsu siaa siab siac siai sias siau siba sibc sibi sibs sibu sica sicc sici sics sicu sida sidd sidi sidr sids sira sirc siri sirr sirs siru sisa sisc sisd sisi siss sisu siui sius sras srbc srcc srib sris srsd srub ssaa ssab ssac ssas ssau ssbr ssca sscc ssci sscs ssdc ssdd ssid ssis ssra ssrc ssri ssrs sssa sssb sssc sssi ssss suar suas sub- suba subb subd subi subs suc- succ suci sucr sucs suda sudd sudi suds suid suir suis sur- sura surc surd suri surr surs suru sus- susa susd susi suss susu suus uabc uaca uair uarc uars uaru uasa uasd uaua ubac ubar ubba ubbi ubic ubid ubii ubir ubis ubra ubud ucad ucai ucar ucas ucbc ucca ucci ucdc ucdd ucrc ucsa ucsb ucsc ucsd ucsu ucua udaa udad udar udas udau udbc udca uddi udds udic udid udir udra udsd uica uira uirr uisd urac urad urai uras urau urba urbi urbs urca urci urda urds urdu uria urib uric uris uriu urra urri ursa ursi urss ursu urur urus us-a usaa usac usad usar usas usba usbc usbr usbs usca uscc uscs usda usdc usds usia usis usra ussa ussb ussc ussr usss ussu usua usui usus uuri uusi uuuu