-er a-a a-b aaa aab aae aaf aak aao aar aas ab- aba abb abe abf abk abo abr abs aea aeb aee aef aek aeo aer aes af- afa afb afe aff afk afo afr afs aka akb ake akk ako akr aks aoa aob aoe aof aok aoo aor aos ar- ara arb are arf ark aro arr ars as- asa asb ase asf ask aso asr ass baa bab bae baf bak bao bar bas bba bbb bbe bbf bbk bbo bbr bbs be- bea beb bee bef bek beo ber bes bfa bfb bfe bff bfo bfr bfs bka bkb bke bkf bkk bko bkr bks boa bob boe bof bok boo bor bos bra brb bre brf brk bro brr brs bsa bsb bse bsf bsk bso bsr bss eaa eab eae eaf eak eao ear eas eba ebb ebe ebf ebk ebo ebr ebs eea eeb eee eef eek eeo eer ees ef- efa efb efe eff efo efr efs eka ekb eke ekf eko ekr eks eo- eoa eob eoe eof eok eoo eor eos era erb ere erf erk ero err ers es- esa esb ese esf esk eso esr ess faa fab fae faf fak fao far fas fba fbb fbe fbf fbk fbo fbr fbs fea feb fee fef fek feo fer fes ffa ffe fff ffk ffo ffr ffs fka fkb fkf fkk foa fob foe fof fok foo for fos fra frb fre frf frk fro frr frs fsa fsb fse fsf fsk fso fsr fss ka- kaa kab kae kaf kak kao kar kas kba kbb kbe kbf kbk kbo kbr kbs ke- kea keb kee kef kek keo ker kes kfa kff kfo kfs kkb kke kkk kkr kks koa kob koe kof kok koo kor kos kra krf krk kro krr krs ksa ksb kse ksf ksk kso ksr kss oaa oab oae oaf oak oao oar oas ob- oba obb obe obf obk obo obr obs oea oeb oee oef oeo oer oes of- ofa ofb ofe off ofo ofr ofs oka okb oke okk oko okr oks oo- ooa oob oof ook ooo oor oos or- ora orb ore orf ork oro orr ors os- osa osb ose osf osk oso osr oss ra- raa rab rae raf rak rao rar ras rba rbb rbe rbf rbk rbo rbr rbs re- rea reb ree ref rek reo rer res rfa rfb rfe rff rfk rfo rfr rfs rkb rke rkf rkk rko rks roa rob roe rof rok roo ror ros rra rrb rrf rrk rrr rrs rsa rsb rse rsf rsk rso rsr rss saa sab sae saf sak sao sar sas sba sbb sbe sbf sbk sbo sbr sbs se- sea seb see sef sek seo ser ses sfa sfb sfe sff sfk sfo sfr sfs sk- ska skb ske skf skk sko skr sks soa sob soe sof sok soo sor sos sr- sra srb sre srf srk sro srr srs ss- ssa ssb sse ssf ssk sso ssr sss

-ase -ose a-ak a-be a-ok aaaa aaab aaae aaaf aaar aaas aaba aabb aaea aaes aafa aafb aaff aaka aake aaoe aaoo aara aare aaro aars aasa aase aasf aass abaa abab abae abaf abak abar abas abb- abba abbb abbe abbo abbr abbs abee aber abes abff aboa abob abof abok aboo abor abos abra abro abrs abs- absa abse absf abss aeaf aeas aebs aeer aeka aer- aera aero aers aess afaa afak afao afar afbs afee afek afer afes affa affo affs afka afkr afoa afoe afoo afor afr- afra afre afro afrs afsa afsb akaa akae akao akar akas akee aker akes akka akko akok akos akr- akra akre aksa aoba aoks aora aorb aors aoss arab arae araf arak arar aras arba arbe arbs area aree aref arek areo ares arfa arfb arff arfs arka arke arko arks aroa arob aroe aroo aror aros arr- arra arre arrk arro arrr arrs ars- arsa arse arsk arso asaa asab asae asaf asak asao asar asas asba asbo asea asee asek aser ases asfa aska aske asko askr asks asob asof asok asor asos asra asro asrs assa asse assk asso assr asss baaa baaf baak baar baas baba babb babe babo babr babs baek baer baes baff bafo bak- baka bake bako bakr baks baos bar- bara barb bare barf bark baro barr bars basa base basf bask baso bass bbas bbbb bbbs bbeb beaf beak bear beas beba bebb bebe bebo beeb beef beek beer bees befa befe beff befo beka beke beko beks beo- beof beok beor beos bera bere berk bero berr bers bes- besa bese besk beso bess bfas bffs bfsr boab boak boar boas boba bobb bobe bobo bobs boea boee boef boeo boer boes bofa bofe boff bofs boka boke boko boks boob booe boof book boor boos bor- bora bore borf bork boro borr bors bosa bose bosk boso boss brab brae braf brak brao bras brea breb bree bref brek breo brer bres brka brkb broa brob broe brok broo bror bros brrr brrs brsb brsr bsaa bsas bsea bseb bsee bser bses bsfa bsff bsfs bsos bsra bsse eaaf eaba eafb eara earb eare earo ears easa ease easo ebba ebbo ebbr ebbs eber ebes eboe eboo ebor ebos ebro ebsa eeea eeee eees eefa eefe eeka eeke eeks eera eero eers eese eesk efab efas efbr efeo efes effa effs efke efor efsa eka- ekab ekeb ekek eker ekes ekka ekoa ekos eoes eoka eora eore eraf eras erba erbb erbe ereb erer eres erfs erke erks erob eroe eroo eros erra erre erro errs ersa erse erso esab esar esas esba esbo esbs esea esee esek eseo eser eses esfs eska eske esko esks eso- esok esos esra essa esse esso f--k faaa faas faba fabe fabo fabs faeb faes fafa fafe faff fafo fake fako fara farb fare fark faro farr fars fasa fase