-er a-a a-b a-t aaa aab aae aak aap aar aas aat ab- aba abb abe abk abp abr abs abt aea aeb aee aek aep aer aes aet aka akb ake akk akp akr aks ap- apa apb ape apk app apr aps apt ar- ara arb are ark arp arr ars art as- asa asb ase ask asp asr ass ast at- ata atb ate atp atr ats att b-p baa bab bae bak bap bar bas bat bba bbb bbe bbk bbp bbr bbs bbt be- bea beb bee bek bep ber bes bet bka bkb bke bkk bkp bkr bks bkt bpa bpb bpe bpp bpr bps bpt bra brb bre brk brp brr brs brt bsa bsb bse bsk bsp bsr bss bst bta btb bte btk btp btr bts btt eaa eab eae eak eap ear eas eat eba ebb ebe ebk ebp ebr ebs ebt eea eeb eee eek eep eer ees eet eka ekb eke ekp ekr eks ekt ep- epa epb epe epp epr eps ept era erb ere erk erp err ers ert es- esa esb ese esk esp esr ess est eta etb ete etk etp etr ets ett k-t ka- kaa kab kae kak kap kar kas kat kba kbb kbe kbk kbp kbr kbs ke- kea keb kee kek kep ker kes ket kkb kke kkk kkp kkr kks kkt kpa kpe kpk kpp kpr kps kpt kra krk krp krr krs krt ksa ksb kse ksk ksp ksr kss kst kta ktb kte ktk ktp ktr kts ktt p-p paa pab pae pak pap par pas pat pba pbb pbe pbk pbp pbr pbs pbt pea peb pee pek pep per pes pet pka pkb pke pkp pkr pks pkt ppa ppb ppe ppk ppp ppr pps ppt pra prb pre prk prp prr prs prt ps- psa psb pse psk psp psr pss pst pt- pta ptb pte ptk ptp ptr pts ptt ra- raa rab rae rak rap rar ras rat rba rbb rbe rbk rbp rbr rbs rbt re- rea reb ree rek rep rer res ret rkb rke rkk rkp rks rkt rpa rpb rpe rpk rpp rpr rps rpt rra rrb rrk rrp rrr rrs rrt rsa rsb rse rsk rsp rsr rss rst rta rtb rte rtk rtp rtr rts rtt saa sab sae sak sap sar sas sat sba sbb sbe sbk sbp sbr sbs sbt se- sea seb see sek sep ser ses set sk- ska skb ske skk skp skr sks skt spa spb spe spk spp spr sps spt sr- sra srb sre srk srp srr srs srt ss- ssa ssb sse ssk ssp ssr sss sst sta stb ste stk stp str sts stt taa tab tae tak tap tar tas tat tba tbb tbe tbk tbp tbr tbs tbt te- tea teb tee tek tep ter tes tet tka tkb tke tkk tkp tkr tks tkt tpa tpb tpe tpk tpp tpr tps tpt tra trb tre trk trp trr trs trt tsa tsb tse tsk tsp tsr tss tst tta ttb tte ttk ttp ttr tts ttt

-ase a-ak a-be aaaa aaab aaae aaap aaar aaas aaba aabb aabp aabt aaea aaep aaes aaka aake aapa aaps aapt aara aare aarp aars aart aasa aase aass aast aata aatk aatt abaa abab abae abak abap abar abas abat abb- abba abbb abbe abbr abbs abbt abee aber abes abet abpa abpp abpr abps abra abrs abs- absa abse absp abss abta abts aeap aeas aebs aeer aeka aer- aera aers aess aest aeta aetr aett akaa akae akap akar akas akee aker akes akka akr- akra akre aksa akst akte apak apap apar apas apat apba apbr apbs apea apep aper apes apet apke appa appr apps appt apra apre aprs aprt apsa apse apss apta apte apts aptt arab arae arak arap arar aras arat arba arbe arbs area aree arek arep ares aret arka arke arks arpa arpe arps arr- arra arre arrk arrr arrs arrt ars- arsa arse arsk arst arta arte artr arts asaa asab asae asak asap asar asas asat asba asea asee asek asep aser ases aset aska aske askr asks askt aspa aspe aspr asps aspt asra asrs assa asse assk assp assr asss asst asta astb aste astp astr asts at-t ataa atab atae atak atap atar atas atat atbs atea atee atep ater ates atka atkt atpr atra atre atrk atrp atsb atse atst atta atte attp attr atts baaa baak baar baas baat baba babb babe babr babs baek baer baes bak- baka bake bakr baks bakt bapa bape bapp baps bapt bar- bara barb bare bark barr bars bart basa base bask bass bast bata bate bats batt bbas bbbb bbbs bbeb bbet bbpr beak beap bear beas beat beba bebb bebe beeb beek beep beer bees beet beka beke beks bera bere berk berr bers bert bes- besa bese besk bess best beta bete bets bett bkpr bkpt bksp bpea bpsa brab brae brak bras brat brea breb bree brek brep brer bres bret brka brkb brrr brrs brsb brsr brst bsaa bsap bsas bsat bsea bseb bsee bser bses bset bskt bspp bspr bsra bsse bsts btaa btbp btek btps btrt btss bttb eaba eapp eaps eara earb eare earp ears eart easa ease east eata eate eats ebba ebbr ebbs eber ebes ebsa eeea eeee eees eeka eeke eeks eeps eera eers eese eesk eeta eete eets eka- ekab ekeb ekek eker ekes eket ekka ekpe ekta epaa epas epee eper epes eppa eppp epps epra eprb eprp eprs epsa epsp epss epta epte erap eras erat erba erbb erbe ereb erer eres eret erke erks erpa erpe erps erra erre errs ersa erse erst erta erts esab esar esas esat esba esbs esea esee esek eser eses eset eska eske esks espa espe espp esps esra essa esse essp esst esta este estp estr ests etak etap etas