nras nrca nrcs nrhs nrna nrrc nrsa nrsc nsaa nsac nsar nsca nscc nscs nshs nsna nsnr nsra nsrc nssa nssb nssc nssr nsss nsub nuan nuba nubc nubs nuca nuch nucs nucu nugs nuha nuna nunc nung nunn nuns nura nurc nurn nurr nurs nuru nush nuss nusu raab raag raan raas raba rabb rabs rabu rac- raca racc rach racs racu raga ragg ragh rags ragu raha rahn rahr rahs rahu rana ranc rang rann rans rara rarb rars rasa rasc rash rass rasu raua raub rauc raun raus rbbb rbbr rbbs rbgh rbhs rbss rcac rcas rcbc rccb rccc rccs rcga rcgc rchb rchs rcnr rcrg rcsa rcsc rcss rgan rgba rghs rhag rhau rhbg rhcg rhhs rhug rhun rhus rnag rnas rnbr rncs rngs rnsh rrah rras rrhs rrna rrrr rrun rsaa rscc rsch rscn rscs rsgb rsgc rshs rsna rsnn rsnr rssa rsua ruag ruah ruan ruas ruba rubb rubs rubu ruca ruch ruga rugg rugh rugs ruhh ruhn ruhr ruhs runa runc rung runn runs rura rurc rurs ruru rusa rush russ rusu ruun sa-c saab saac saag saah saan saar saas saba sabb sabc sabr sabs sabu saca sacc sacn sacr sacs sacu saga sagg sagh sags sagu saha sahg sahn sahr sahs sahu sana sang sann sanr sans sanu sara sarc sarg sarh sarn sarr sars saru sasa sasc sash sass saua sauc sauh saun saur saus sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbhc sbhs sbsa sbus scaa scab scac scag scan scar scas scba sccc sccs scgs sch- scha schh schr schs scna scnr scr- scra scrc scrn scrs scsa scsc scsh scsn scsr scsu scua scub scug scun scur sgaa sgac sgau sgca sgcb sgcg sggg sggs sghc sghs sgsh sgss shab shac shag shah shan shar shas shau shbs shca shcc shga shgc shgr shha shhh shhs shrs shsc shua shub shug shun shur shus shuu snab snag snar snas snba snca sncc snhs snns snra snrs snub snug snur snus sras srbc srcc srch srgb srhs srna srnn srub ssaa ssab ssac ssan ssas ssau ssbn ssbr ssca sscc sscs ssgs sshs ssns ssra ssrc ssrg ssrs sssa sssb sssc sssh ssss suan suar suas sub- suba subb subg subh subs suc- succ such sucr sucs sug- suga sugg sugh suha suhb suhr sun- suna sunb sung sunn suns sunu sur- sura surc surg surn surr surs suru sus- susa suss susu suus uabc uaca uahs uang uarc uars uaru uasa uaua ubac ubar ubba ubra ucan ucar ucas ucbc ucca ucha uchs ucrc ucsa ucsb ucsc ucsu ucua ugab ugar ugcc ugcg uggs ughs ugra ugur uguu uhna uhrs uhss uhuh unaa unac unan unar unas unau unca uncc uncg unch uncs unga ungu unha unna unns unra unrs uns- unsa unsc unsg unus urac uran uras urau urba urbs urca urch urga urgh urgu urna urns urra urrh ursa urss ursu urun urur urus us-a usaa usac usag usan usar usas usba usbc usbr usbs usca uscc uscg usch uscs usga usha ushr ushs ushu usna usnc usnr usnu usra ussa ussb ussc ussr usss ussu usua usun usus uuuu