aaaa aaab aaaf aaap aaar aaas aaba aabb aabp aabt aafa aafb aaff aaoo aapa aapo aaps aapt aara aaro aarp aars aart aasa aasf aass aast aata aatf aatt abaa abab abaf abap abar abas abat abb- abba abbb abbo abbr abbs abbt abff aboa abob abof aboo abor abos abot abpa abpp abpr abps abra abro abrs abs- absa absf absp abss abta abts afaa afao afap afar afat afbs affa affo affs afft afoa afoo afor afpa afr- afra afro afrs afsa afsb afsp afst afta aftp afts aoba aopo aora aorb aors aort aosp aoss aotf apao apap apar apas apat apba apbr apbs apfa apfo apft apo- apof apoo apop apor apos apot appa appr apps appt apra apro aprs aprt apsa apso apss apta apts aptt arab araf arap arar aras arat arba arbs arfa arfb arff arfs arft aroa arob aroo aror aros arpa arps arr- arra arro arrr arrs arrt ars- arsa arso arst arta arto artr arts asaa asab asaf asao asap asar asas asat asba asbo asfa asob asof asop asor asos asot aspa aspo aspr asps aspt asra asro asrs assa asso assp assr asss asst asta astb asto astp astr asts at-t ataa atab atap atar atas atat atbs atfb atfs atob atof atop ator atos atot atpr atra atro atrp atsb atst atta atto attp attr atts baaa baaf baar baas baat baba babb babo babr babs baff bafo baft baos bapa bapp baps bapt bar- bara barb barf baro barr bars bart basa basf baso bass bast bata batf bato bats batt bbas bbbb bbbs bbpr bfas bffs bfpo bfpp bfsr bfta bfts bftt boab boar boas boat boba bobb bobo bobs bofa boff bofs boob boof boop boor boos boot bopa bopp bops bor- bora borf boro borr bors bort bosa boso boss bost bota botb boto bots bott bpot bpsa bptf brab braf brao bras brat broa brob broo bror bros brot brrr brrs brsb brsr brst bsaa bsap bsas bsat bsfa bsff bsfs bsos bspp bspr bsra bsts btaa btaf btbp btob btor btps btrt btss bttb faaa faap faas faba fabo fabs fafa faff fafo fapa fapp faps fara farb faro farp farr fars fart fasa faso fass fast fata fatf fato fats fatt fbar fbop fbrs ffar ffff ffps ffrr ffsa ffss fftf foaf foar foba fobs fobt fofo foof foos foot fopp fops for- fora forb foro forr fors fort fosa fosb foso foss fost fota foto fotp fots fott fpaa fpas fpra fprf frab frap fras frat frob frop fros frot frps frsb frso frst frta fsas fsfo fspf fsra fssa fssf fssp fsta ftop ftos ftps ftrs ftsa ftsr oafo oafs oaps oara oars oass oast oats obas obba obbo obor obos obot obra obro obsr obss obst obts ofas off- offa offo offr offs ofor ofra ofst ofta oftp ooaa ooba ooff oofs oooo ooos oops oora oort oosa oost ootb ootp oots opap opar opo- opor opos oppa oppo opps opra opsa opto opts orab orao orar oras orat orba orbb orbo orbs orff orfs oro- orof oror oros orot orps orra orro orrs orsa orso orta orto orts osaf osap osar osas osat osba osbp osfa osoo osor osos osro ossa ossb osso osta ostr osts otap otar otas otbs otfp oto- otof otoo otor otos otpp otra otro otrs otsa otso otta otto otts paap paar paas paat paba pabt pafa paff paos papa papb papp papr paps par- para parf paro parp parr pars part pasa paso pasp pass past pata pato patr pats patt pbar pbpa pbrf pbrs pbsa pbsp pfaa pfas pfff pffr pfft pfps pfra poar poas poat poba pobo pobs poff poof poop poor poos poot pop- popa popo popp pops popt pora porb poro porr pors port posa posb poso poss post pota potf poto pots pott ppap ppar ppfa ppoa ppos pppa pppo pppp ppps pprf ppsf ppss ppta ppts pptt prao prar pras prat prbs prfs pro- proa prob prof proo prop pros prot prps prrs prsa prso prss prtp prtr psap psas psat psbr psbt psfs psoa psos pspp pspr psps psrp pssa psso psst psts ptab ptaf ptas ptop ptrf ptsa raab raaf raas raat raba rabb rabo rabs rafa raff raft raob raop raos rapa rapp raps rapt rara rarb rarf raro rars rasa raso rasp rass rast rata ratf rato ratp rats ratt rbaf rbbb rbbr rbbs rbsp rbss rbst roab roaf roap roar roas roat rob- roba robb robo robs robt roff rofo roob roof roop roor roos root ropa ropo rops rora roro rort rosa roso rosp ross rost rota roto rotr rots rott rpob rpof rpos rpps rpta rpts rras rrat rrrr rrsp rsaa rsaf rsos rspb rspo rsps rssa rstp rsts rtas rtbf rtfb rtpa rtps rtss rttp rtts s-os saab saaf saap saar saas saat saba sabb sabo sabr sabs safa safb saff safo safr saft saor saos sapa sapo sapp saps sara sarf saro sarp sarr sars sart sasa sasf saso sass sast sata satb sato satr sats satt sbaa sbar sbas sbbs sbor sbot sbsa sbsp sbst sfar sfas sfba sfor sfos sfpa sfra sfro sfss sftp sfts soap soar soas soat soba sobo sobp sobr sobs sobt sofa sofo soft soof soop soor soos soot sopa sopo sopp sops sora sorb soro sorr sors sort sosa soso soss sost sota soto sotp sots sp-a spap spar spas spat spfs spoo spop spor spos spot sppf spps spro sprs spsa spso spsp spss spst spta sptb spto sptr spts sraf sras sros srps srpt srsp srta srtp srtr ssaa ssab ssao ssap ssas ssat ssbr ssfp ssop ssot sspa sspf sspo ssps sspt ssra ssrs sssa sssb sssf ssss ssta sstb sstp ssts stab stap star stas stat stbs stoa stob stof stoo stop stor stos stot stpf stpp stps stra stro strs stsf stss sttr taa- taaf taar taas taat taba tabb tabo tabs