-ana aaaa aaab aaan aaap aaar aaas aaba aabb aabp aana aanp aaon aaoo aapa aapo aaps aara aaro aarp aars aasa aass abaa abab aban abap abar abas abb- abba abbb abbo abbr abbs aboa abob abon aboo abor abos abpa abpn abpp abpr abps abra abro abrs abs- absa absp abss ana- anaa anab anan anao anap anar anas anba anbb anbo anna annb anno anns ano- anoa anon anor anos anp- anpa anpp anpr ansa anso ansp aoba aonb aono aopo aora aorb aorn aors aosp aoss apan apao apap apar apas apba apbr apbs apna apno apo- apon apoo apop apor apos appa appr apps apra aprn apro aprs apsa apso apss arab aran arap arar aras arba arbs arna arno arns aroa arob aron aroo aror aros arpa arps arr- arra arro arrr arrs ars- arsa arso asaa asab asan asao asap asar asas asba asbo asno asob ason asop asor asos aspa aspo aspr asps asra asro asrs assa assn asso assp assr asss baaa baan baar baas baba babb babo babr babs bana bann bano banp banr bans baon baos bapa bapp baps bar- bara barb barn baro barr bars basa baso bass bbas bbbb bbbs bbpr bnas bnor bnpp bnrr bnss boab boan boar boas boba bobb bobo bobs bona bonn bono bons boob boon boop boor boos bopa bopp bops bor- bora born boro borr bors bosa bosn boso boss bpsa brab bran brao bras brna brno brns broa brob bron broo bror bros brrr brrs brsb brsr bsaa bsap bsas bsns bson bsos bspp bspr bsra naaa naab naan naar naas naba nabo nabs nan- nana nanb nann nano nanp nans naor naos napa napb napo napp naps nara narn naro narp narr nars nas- nasa nasb naso nasp nasr nass nbaa nbap nbar nbas nbbo nbpa nbpp nbps nbsp nnnn nnos nnpr nnsa nnss noaa noap noba nobo nobs non- nona nonn nono nons noo- noob noon nooo noop noor noos nops nor- nora norb norn noro norr nors nos- nosa noss npap npas nppa npra npsa npss nrab nrap nras nrna nron nrpn nrps nrsa nrsp nsaa nsar nsbo nsna nsnr nsos nsps nsra nssa nssb nsso nssp nssr nsss oaps oara oars oass oban obas obba obbo obon obor obos obra obro obsn obsr obss onab onan onar onas onna onno onon onor onos onra onso ooaa ooba oona oons oooo ooos oops oora oosa opan opap opar opo- opon opor opos oppa oppo opps opra opsa orab oran orao orar oras orba orbb orbo orbs orna orno orns oro- oron oror oros orps orra orro orrs orsa orso osan osap osar osas osba osbp osno osnr osoo osor osos osro ossa ossb osso paan paap paar paas paba pan- pana pann pano pans paon paos papa papb papp papr paps par- para parn paro parp parr pars pasa paso pasp pass pban pbar pbpa pbrs pbsa pbsp pnar pnas pnon pnpo pnpp pnra pnro poan poar poas poba pobo pobs pona pono ponp pons poon poop poor poos pop- popa popo popp pops pora porb porn poro porr pors posa posb posn poso poss ppan ppap ppar ppoa ppos pppa pppn pppo pppp ppps ppss pran prao prar pras prbs prna prnp pro- proa prob pron proo prop pros prps prrs prsa prso prss psap psas psbr psna psnr psoa pson psos pspp pspr psps psrp pssa psso raab raan raas raba rabb rabo rabs rana rann rano rans raob raop raos rapa rapp raps rara rarb raro rars rasa raso rasp rass rbbb rbbr rbbs rbsp rbss rnas rnbr rnsp roab roan roap roar roas rob- roba robb robo robs rona rono rons roob roon roop roor roos ropa ropo rops rora roro rosa roso rosp ross rpob rpon rpos rppn rpps rras rrna rrrr rrsp rsaa rsna rsnn rsno rsnr rsos rspb rspo rsps rssa s-os saab saan saap saar saas saba sabb sabo sabr sabs sana sann sano sanr sans saon saor saos sapa sapo sapp saps sara sarn saro sarp sarr sars sasa saso sass sbaa sbar sbas sbbs sbor sbsa sbsp snab snap snar snas snba snns snoa snob snoo snop snor snos snpo snpp snra snrs soan soap soar soas soba sobo sobp sobr sobs son- sona sono sons soon soop soor soos sopa sopo sopp sops sora sorb sorn soro sorr sors sosa soso soss sp-a span spap spar spas spns spon spoo spop spor spos spps spro sprs spsa spso spsp spss sras srna srnn srno sros srps srsp ssaa ssab ssan ssao ssap ssas ssbn ssbr ssns ssop sspa sspo ssps ssra ssrs sssa sssb ssss