-er a-a a-b aaa aab aae aak aao aap aar ab- aba abb abe abk abo abp abr aea aeb aee aek aeo aep aer aka akb ake akk ako akp akr aoa aob aoe aok aoo aop aor ap- apa apb ape apk apo app apr ar- ara arb are ark aro arp arr b-p baa bab bae bak bao bap bar bba bbb bbe bbk bbo bbp bbr be- bea beb bee bek beo bep ber bka bkb bke bkk bko bkp bkr boa bob boe bok boo bop bor bpa bpb bpe bpo bpp bpr bra brb bre brk bro brp brr eaa eab eae eak eao eap ear eba ebb ebe ebk ebo ebp ebr eea eeb eee eek eeo eep eer eka ekb eke eko ekp ekr eo- eoa eob eoe eok eoo eop eor ep- epa epb epe epo epp epr era erb ere erk ero erp err ka- kaa kab kae kak kao kap kar kba kbb kbe kbk kbo kbp kbr ke- kea keb kee kek keo kep ker kkb kke kkk kkp kkr koa kob koe kok koo kop kor kpa kpe kpk kpo kpp kpr kra krk kro krp krr oaa oab oae oak oao oap oar ob- oba obb obe obk obo obp obr oea oeb oee oeo oep oer oka okb oke okk oko okp okr oo- ooa oob ook ooo oop oor op- opa opb ope opk opo opp opr or- ora orb ore ork oro orp orr p-p paa pab pae pak pao pap par pba pbb pbe pbk pbo pbp pbr pea peb pee pek peo pep per pka pkb pke pko pkp pkr poa pob poe pok poo pop por ppa ppb ppe ppk ppo ppp ppr pra prb pre prk pro prp prr ra- raa rab rae rak rao rap rar rba rbb rbe rbk rbo rbp rbr re- rea reb ree rek reo rep rer rkb rke rkk rko rkp roa rob roe rok roo rop ror rpa rpb rpe rpk rpo rpp rpr rra rrb rrk rrp rrr

a-ak a-be a-ok aaaa aaab aaae aaap aaar aaba aabb aabp aaea aaep aaka aake aaoe aaoo aapa aapo aara aare aaro aarp abaa abab abae abak abap abar abb- abba abbb abbe abbo abbr abee aber aboa abob abok aboo abor abpa abpp abpr abra abro aeap aeer aeka aer- aera aero akaa akae akao akap akar akee aker akka akko akok akpo akr- akra akre aoba aokp aopo aora aorb apak apao apap apar apba apbr apea apep aper apke apo- apoe apoo apop apor appa appr apra apre apro arab arae arak arap arar arba arbe area aree arek areo arep arka arke arko aroa arob aroe aroo aror arpa arpe arr- arra arre arrk arro arrr baaa baak baar baba babb babe babo babr baek baer bak- baka bake bako bakr bapa bape bapp bar- bara barb bare bark baro barr bbbb bbeb bbpr beak beap bear beba bebb bebe bebo beeb beek beep beer beka beke beko beo- beok beor bepo bera bere berk bero berr bkpr boab boak boar boba bobb bobe bobo boea boee boeo boep boer boka boke boko boob booe book boop boor bopa bope bopp bor- bora bore bork boro borr bpea bpoe brab brae brak brao brea breb bree brek breo brep brer brka brkb broa brob broe brok broo bror brrr eaba eaop eapp eara earb eare earo earp ebba ebbo ebbr eber eboe eboo ebor ebpo ebro eeea eeee eeka eeke eera eero eka- ekab ekeb ekek eker ekka ekoa ekpe ekpo eoka eora eore epaa epee eper epor eppa eppo eppp epra eprb epro eprp erap erba erbb erbe ereb erer erke erob eroe eroo erpa erpe erra erre erro kaaa kaab kaak kaap kaar kaba kabb kabe kabo kabr kaeo kaep kaer kaka kake kakk kako kaoa kaok kaor kap- kapa kape kapo kapp kara karb kare kark karo karp karr kbaa kbab kbae kbak kbap kbar kbba kbbb kbbe kbbk kbbo kbbr kbeb kbee kbek kbeo kber kbkb kbkk kbko kbkr kboa kbob kboe kbok kboo kbpa kbpe kbpk kbpo kbpr kbra kbrb kbre kbrk kbro kea- keak keap kear keba kebb kebe kebr keek keep keer keka kekb keke keko keok kep- kepa kepe ker- kera kerb kere kerk kero kerp kerr kkaa kkap kkar kkba kkbb kkbe kkbo kkbr kkea kkkk kkoa kkob kkoo kkor kkpk kkrb kkre kkrk kkro kkrr koab koae koak koap koar koba kobb kobe kobk kobo kobr koea koka kokb koke kokk koko kokp kokr koob kook kooo koop koor kopa kopb kope kopp kopr kora korb kore kork koro korr kpae kpak kpao kpar kpba kpbb kpbe kpbr kpek kper kpke kpkk kpkr kpoa kpob kpoe kpok kpoo kpop kppk kppo kppp kppr kprb kpre kprk kpro kprp kprr krab krae krak krap krar krba krbb krbe krbk krbr krea kreb kree krek kreo krka krke krkk krko krkr kroa krob kroe krok kroo krop kror krpa krpr krrb krre krrk krro krrr o-eo oaer oake oara oare obak obba obbo obea ober obkb oboe obok obor obra obre obro oepa oera oere okak okap oker okka okko okok okor okpe okpo okra okre okro ooaa ooak ooba oobe ooer oooo oora oore opap opar opep oper opo- opor oppa oppo opra orab orae orak orao orar orba orbb orbe orbo ore- orea oreb orek oreo orer orka orke orko oro- oroe orok oror orpe orra orro paak paap paar paba paea paep paer paka pake pako papa papb pape papp papr par- para pare park paro parp parr pbar pbpa pbpk peab peak peap pear peba peek peep peer peka peke pekk peko peor pepa pepe pepo per- pera pere perk pero perp perr poak poar poba pobo poea poer poka poke poko pook poop poor pop- popa pope popo popp pora porb pore pork poro porr ppap ppar pper ppoa pppa pppo pppp prae prao prar pre-