irca ircc ircg ircs iree irer ires irgs iri- iria iric irie irig iris irra irrc irre irri irrs irsa irse irsg irta irte irti irts is-a isac isae isai isar isas isat isca iscc isci iscr iscs isct isea isec isee iser ises iset isgc isia isic isie isis isit isra isrg isri issa issc isse issi issr isss ista istc iste isti istr ists itaa itac itai itar itas itat itcs itea itec iter ites itet itgc itgs itia itic itie itis itra itri itrs itsa itse itsi itta raag raas raat rac- raca racc race raci racs ract raec raeg raer raes raga rage ragg ragi rags raia raic raie raig raii rair rais rait rara rare rari rars rasa rasc rase rasi rass rast rata rate rati rats ratt rcac rcas rccc rccs rcet rcga rcgc rcic rcis rcrg rcsa rcsc rcsi rcss rctc rctg rcti rcts rea- reac reae rear reas reat reca recc rece reci recr recs rect rees reet rega rege regi regr regs regt reia reii reir reis reit rera rere rerg reri rers rert resa rese resi ress rest reta rete reti retr rets rett rgit rgtr rgts riaa riai rias riat rica ricc rice rics rict rier ries riet riga rige rigg rigi rigs riia riis rire riri rirs risa risc rise risi riss rist rita rite riti rits ritt rras rrat rrrr rsaa rsai rscc rscs rsee rsgc rsis rsre rssa rsts rtai rtas rtca rtcc rtce rtcg rtee rtei rtes rtgs rtss rtts s-ic s-ii sa-c saac saae saag saar saas saat saca sacc sace saci sacr sacs sact saer saes saga sage sagg sagi sags sagt saia saic saie sair sais sait sara sarc sare sarg sari sarr sars sart sasa sasc sase sasi sass sast sata satc sate satg sati satr sats satt scaa scac scag scai scar scas scat sccc scce sccs scct scea scec scee sceg scer scet scgs sci- scia scic scie scir scis scit scr- scra scrc scre scri scrs scsa scsc scsi scsr scst sctc sctr scts se-c se-e se-g se-i se-s se-t seaa seac sear seas seat sec- seca secc sece secg secr secs sect seea seec seeg seer sees seet sega sege segg segi segs seia seie seii seir seis seit sera serc sere serg seri serr sers sert sesa sesc sese sesi sess sest set- seta setc sete seti sets sett sgaa sgac sgca sgce sgcg sger sges sggg sggs sgic sgss sgta sgts siaa siac siae siag siai sias siat sica sicc sice sici sics siec sieg sier sies siga sige sigg sigi sigs siit sira sirc sire siri sirr sirs sirt sisa sisc sise sisi siss sist sit- sita sitc site siti sits sitt sras srcc srct srec sres sris srta srtr ssaa ssac ssas ssat ssca sscc ssce ssci sscs ssec ssee sses sset ssgs ssgt ssis ssit ssra ssrc ssrg ssri ssrs sssa sssc sssi ssss ssta sstc ssts stac stae stag stai star stas stat stca stcc stcs stea stec stee steg ster stes stet stge stgr stia stic stie stig stir stis stit stra strc stre stri strs stsi stss sttc sttr taa- taag taar taas taat taca tacc tace taci tacs tact taec taer taes taga tage tagg tagi tags taia taig tair tais tait tara tarc tare targ tari tarr tars tart tasa tasc tase tasi tasr tass tast tata tate tati tatr tats tatt tcca tccc tcga tctc tcts teac tear teas teat teca tecr tecs tect teec teer tees teet tega tegg tegi tegs tegt teia teic teie teir teis ter- tera terc tere teri terr ters tesa tesc tese tess test teta tete teti tetr tets tett tgcc tgtc tgts tiaa tiar tias tica ticc tice tics tie- tiea tiee tiei tier ties tiet tiga tige tigi tigr tigs tiit tira tire tiri tirr tirs tisa tise tisi tiss tist tita titc tite titi tits titt traa trac trae trag trai tras trat trca trcc tre- trea trec tree treg trei tres tret trge tri- tria tric trie trig tris trit trra trsi trst trtc trte trtr tsaa tsai tsar tsat tsca tscc tscg tsec tses tset tsgt tsia tsig tsis tssa tsse tssg tssi tssr tsst tstc tsts tter ttss tttt