a-ii aaaa aaab aaai aaap aaar aaas aaba aabb aabi aabp aaib aaii aais aaoo aapa aapi aapo aaps aara aari aaro aarp aars aasa aasi aass abaa abab abai abap abar abas abb- abba abbb abbi abbo abbr abbs abia abib abir abis aboa abob aboo abor abos abpa abpi abpp abpr abps abra abri abro abrs abs- absa absi absp abss aiai aias aiba aibo aiia aiib aiir aioi aipa aipi aips aira airi airo airp airs aisa aisb aisi aiso aisr aoba aopo aora aorb aors aosp aoss apai apao apap apar apas apba apbr apbs api- apia apio apip apis apo- apoo apop apor apos appa appr apps apra apri apro aprs apsa apsi apso apss arab arai arap arar aras arba arbi arbs aria arib arii ario arip aris aroa arob aroi aroo aror aros arpa arpi arps arr- arra arri arro arrr arrs ars- arsa arsi arso asaa asab asai asao asap asar asas asba asbo asia asii asio asip asir asis asob asoi asop asor asos aspa aspi aspo aspr asps asra asro asrs assa assi asso assp assr asss ba-i baaa baar baas baba babb babi babo babr babs baia baib baio bair bais baos bapa bapi bapp baps bar- bara barb bari baro barr bars basa basi baso bass bbas bbbb bbbs bbpr biao biap biar bias biba bibb bibi bibo bibs biis bio- bioi bios bipa bipp bips bira birb biri biro birr birs bis- bisa biso bisp biss boab boai boar boas boba bobb bobi bobo bobs boi- boii bois boob boop boor boos bopa bopp bops bor- bora bori boro borr bors bosa bosi boso boss bpai bpsa brab brai brao bras bria brio bris broa brob broo bror bros brrr brrs brsb brsr bsaa bsap bsas bsos bspp bspr bsra iaaa iaai iaap iaas iaba iaia iais iapa iapp iaps iara iars iasa iasi iaso iasp iasr ibar ibas ibia ibis ibos ibra ibri ibro ibsa ibss iias iiii iiio iiis iioi iioo iiop iios iipa iira iirs iisi iisp iisr ioba iobi ioii ioio iooi iooo ioos iops iora iori iors ioso ipas ipba ipop ipos ippa ippo ippr ipri ipsa ipsi ipso ipsp ipss irai irao irap irar iras irbp iri- iria irio irip iris irob irop irpa irps irra irri irrs irsa irsp is-a isai isao isar isas isba isia isis iso- isop isor isos ispa ispr isps isra isri isrp issa issi isso issp issr isss oais oapi oaps oara oars oasi oass obai obas obba obbo obia obis oboi obor obos obra obri obro obsr obss oiba oiii oios oira ooaa ooba oobi ooia oooo ooos oops oora oosa oosi opap opar opia opii opio opis opo- opor opos oppa oppi oppo opps opra opsa opsi orab orai orao orar oras orba orbb orbi orbo orbs ori- oria orio oris oro- oror oros orpi orps orra orri orro orrs orsa orsi orso osai osap osar osas osba osbp osia osii osip osis osoi osoo osor osos osro ossa ossb ossi osso paap paar paas paba paia paib paio paip pair pais paos papa papb papi papp papr paps par- para pari paro parp parr pars pasa pasi paso pasp pass pbar pbpa pbrs pbsa pbsp piai piao pias pibb pibi piia piip piob pipa pipi pipo pipp pips pira piri piro pirr pirs pisa pisi piso piss poar poas poba pobo pobs poia poio pois poop poor poos pop- popa popi popo popp pops pora porb pori poro porr pors posa posb posi poso poss ppap ppar ppib ppoa ppos pppa pppo pppp ppps ppss prai prao prar pras prbs pri- pria prii pris pro- proa prob proo prop pros prps prri prrs prsa prsi prso prss psap psas psbr psia psip psis psoa psoi psos pspi pspp pspr psps psrp pssa psso raab raas raba rabb rabi rabo rabs raia raii raip rair rais raob raop raos rapa rapi rapp raps rara rarb rari raro rars rasa rasi raso rasp rass rbbb rbbr rbbs rbis rbsp rbss riaa riab riai rias rib- riba ribo ribs riia riis rios ripa ripi ripp ripr rips riri rirs risa risi riso risp riss roab roap roar roas rob- roba robb robi robo robs roia roio roir rois roob rooi roop roor roos ropa ropo rops rora rori roro rosa rosi roso rosp ross rpii rpob rpos rpps rras rrrr rrsp rsaa rsai rsbi rsis rsos rspb rspo rsps rssa s-ib s-ii s-os saab saap saar saas saba sabb sabi sabo sabr sabs saia saip sair sais saoi saor saos sapa sapi sapo sapp saps sara sari saro sarp sarr sars sasa sasi saso sass sbaa sbai sbar sbas sbbs sbia sbor sbsa sbsi sbsp siaa siab siai sias siba sibi sibo sibs siop sior sios sipa sipi sipo sipp sips sira siri siro sirp sirr sirs sisa sisi siss soap soar soas soba sobo sobp sobr sobs soia soir sois soop soor soos sopa sopi sopo sopp sops sora sorb sori soro sorr sors sosa sosi soso soss sp-a spap spar spas spia spib spio spip spir spis spoo spop spor spos spps spri spro sprs spsa spso spsp spss sras srib sris sros srps srsp ssaa ssab ssao ssap ssas ssbr ssis ssop sspa sspo ssps ssra ssri ssrs sssa sssb sssi ssss