-er a-a a-b aaa aab aae aak aam aao aar ab- aba abb abe abk abm abo abr aea aeb aee aek aem aeo aer aka akb ake akk akm ako akr ama amb ame amk amm amo amr aoa aob aoe aok aom aoo aor ar- ara arb are ark arm aro arr baa bab bae bak bam bao bar bba bbb bbe bbk bbm bbo bbr be- bea beb bee bek bem beo ber bka bkb bke bkk bkm bko bkr bma bmb bme bmk bmm bmo bmr boa bob boe bok bom boo bor bra brb bre brk brm bro brr eaa eab eae eak eam eao ear eba ebb ebe ebk ebm ebo ebr eea eeb eee eek eem eeo eer eka ekb eke eko ekr em- ema emb eme emk emm emo emr eo- eoa eob eoe eok eom eoo eor era erb ere erk erm ero err ka- kaa kab kae kak kam kao kar kba kbb kbe kbk kbm kbo kbr ke- kea keb kee kek kem keo ker kkb kke kkk kkm kkr kma kmb kme kmk kmm kmo koa kob koe kok kom koo kor kra krk kro krr m-o m-r maa mab mae mak mam mao mar mba mbb mbe mbk mbm mbo mbr mea meb mee mek mem meo mer mka mkb mke mkk mkm mko mkr mma mmb mme mmk mmm mmo mmr moa mob moe mok mom moo mor mra mrb mre mrk mrm mro mrr oaa oab oae oak oam oao oar ob- oba obb obe obk obm obo obr oea oeb oee oem oeo oer oka okb oke okk oko okr om- oma omb ome omm omo omr oo- ooa oob ook oom ooo oor or- ora orb ore ork orm oro orr ra- raa rab rae rak ram rao rar rba rbb rbe rbk rbm rbo rbr re- rea reb ree rek rem reo rer rkb rke rkk rkm rko rma rmb rme rmm rmo rmr roa rob roe rok rom roo ror rra rrb rrk rrm rrr

a-ak a-be a-ok aaaa aaab aaae aaam aaar aaba aabb aabm aaea aaem aaka aake aama aamb aame aamo aamr aaoe aaoo aara aare aarm aaro abaa abab abae abak abam abar abb- abba abbb abbe abbo abbr abee aber abma abmb aboa abob abok aboo abor abra abro aeer aeka aeom aer- aera aero akaa akae akam akao akar akee aker akka akko akok akom akr- akra akre amaa amae amam amar amb- amba ambe ambo ambr amee amer amka amm- amma amme ammo amob amok amoo amor amra amro aoba aoma aora aorb arab arae arak aram arar arba arbe area aree arek arem areo arka arke arko arma arme armm armo aroa arob aroe arom aroo aror arr- arra arre arrk arro arrr baaa baak baam baar baba babb babe babm babo babr baek baer bak- baka bake bako bakr bama bamb bame bamm bar- bara barb bare bark barm baro barr bbbb bbeb beak beam bear beba bebb bebe bebo beeb beek beem beer beka beke beko bema beme beo- beok beor bera bere berk berm bero berr bmaa boab boak boar boba bobb bobe bobo boea boee boeo boer boka boke boko boma bomb bome boob booe book boom boor bor- bora bore bork borm boro borr brab brae brak bram brao brea breb bree brek brem breo brer brka brkb broa brob broe brok brom broo bror brrm brrr eaba eama eame eaom eara earb eare earo ebam ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eeka eeke eemo eera eero eka- ekab ekam ekeb ekek eker ekka ekma ekoa emae emam emar emba embe embo embr emek emer emma emme emor emra emre eoka eora eore eram erba erbb erbe ereb erem erer erke erma erme ermo erob eroe eroo erra erre erro kaaa kaab kaak kaam kaar kaba kabb kabe kabo kabr kaeo kaer kaka kake kakk kakm kako kam- kama kamb kame kamm kamo kamr kaoa kaok kaor kara karb kare kark karm karo karr kbaa kbab kbae kbak kbam kbar kbba kbbb kbbe kbbk kbbm kbbo kbbr kbeb kbee kbek kbeo kber kbkb kbkk kbko kbkr kbmb kbme kbmo kbmr kboa kbob kboe kbok kboo kbra kbrb kbre kbrk kbro kea- keak keam kear keba kebb kebe kebr keek keem keer keka kekb keke keko kema kemb keme kemm kemo kemr keok keom ker- kera kerb kere kerk kerm kero kerr kkaa kkam kkar kkba kkbb kkbe kkbo kkbr kkea kkkk kkma kkmk kkmo kkmr kkoa kkob kkoo kkor kkrb kkre kkrk kkro kkrr kmae kmak kmam kmbr kmea kmem kmeo kmer kmke kmkk kmko kmme kmmk kmmm kmmo kmmr kmoa kmob kmoe kmok kmom kmor kmrb kmro kmrr koab koae koak koar koba kobb kobe kobk kobo kobr koea koka kokb koke kokk koko kokr koma komb kome komo komr koob kook kooo koor kora korb kore kork koro korr krab krae krak kram krar krba krbb krbe krbk krbm krbr krea kreb kree krek krem kreo krka krke krkk krko krkr krma krmb krme krmo krmr kroa krob kroe krok krom kroo kror krrb krre krrk krrm krro krrr maaa maak maam maar maba mabe mabo maee maem maeo maer maka make mako mama mame mamo maor mar- mara mare mark marm maro marr mbam mbba meak mear mebe mebo meek meem meer meka meke meko mema meme memo memr meok meor mer- mera merb mere merk merm mero mkak mker mmaa mmab mmar mmea mmmm mmor moaa moab moam moar moba mobb mobe mobo moea moka moke moko moma mome momo mooa moob mooe mook moor mora morb more mork moro mrbb mrbm mreb mree mrkr o-eo oaer oake oama oara oare obak obba obbo obea ober obkb oboe obok obor obra obre obro oeme oera oere oerm okak okam oker okka okko okmo okok okom okor okra okre okro omak omam omao omar ombe ombo omee omeo omer omma omo-