-al -ol a-a a-b aaa aab aaf aak aal aao aar ab- aba abb abf abk abl abo abr af- afa afb aff afk afl afo afr aka akb akk akl ako akr al- ala alb alf alk all alo alr aoa aob aof aok aol aoo aor ar- ara arb arf ark arl aro arr baa bab baf bak bal bao bar bba bbb bbf bbk bbl bbo bbr bfa bfb bff bfl bfo bfr bka bkb bkf bkk bkl bko bkr bla blb blf blk bll blo blr boa bob bof bok bol boo bor bra brb brf brk brl bro brr faa fab faf fak fal fao far fba fbb fbf fbk fbl fbo fbr ffa fff ffk ffl ffo ffr fka fkb fkf fkk fkl fla flb flf fll flo flr foa fob fof fok fol foo for fra frb frf frk frl fro frr ka- kaa kab kaf kak kal kao kar kba kbb kbf kbk kbl kbo kbr kfa kff kfo kkb kkk kkl kkr kl- kla klb klf klo klr koa kob kof kok kol koo kor kra krf krk krl kro krr la- laa lab laf lak lal lao lar lba lbb lbf lbk lbl lbo lbr lfa lfb lff lfk lfl lfo lfr lka lkb lkl lkr lla llb llf llk lll llo llr loa lob lof lok lol loo lor lra lrb lrf lrk lro lrr oaa oab oaf oak oal oao oar ob- oba obb obf obk obl obo obr of- ofa ofb off ofl ofo ofr oka okb okk okl oko okr ola olb olf olk oll olo oo- ooa oob oof ook ool ooo oor or- ora orb orf ork orl oro orr ra- raa rab raf rak ral rao rar rba rbb rbf rbk rbl rbo rbr rfa rfb rff rfk rfl rfo rfr rkb rkf rkk rko rla rlf rll rlo rlr roa rob rof rok rol roo ror rra rrb rrf rrk rrl rrr

a-ak a-ok aaaa aaab aaaf aaal aaar aaba aabb aabl aafa aafb aaff aafl aaka aala aall aalo aaoo aara aaro abaa abab abaf abak abal abar abb- abba abbb abbo abbr abff abla ablo aboa abob abof abok abol aboo abor abra abro afaa afak afao afar affa affo afka afkr afla afoa afol afoo afor afr- afra afro akaa akal akao akar akka akko aklo akok akr- akra alaa alak alal alao alar alb- alba albo alfa alk- alka alkb alko all- alla alll allo allr aloa alof alok alol aloo alor alro aoba aola aora aorb arab araf arak aral arar arba arfa arfb arff arka arko arla arlo aroa arob aroo aror arr- arra arrk arro arrr baaa baaf baak baal baar baba babb babo babr baff bafo bak- baka bakl bako bakr bala balf balk ball balo baol bar- bara barb barf bark baro barr bbbb bblb bffl blaa blab blak blkb blob blok bloo boab boak boal boar boba bobb bobo bofa boff boka boko bola bolk boll bolo boob boof book bool boor bor- bora borf bork boro borr brab braf brak brao brka brkb broa brob brok brol broo bror brrr f--k faaa faba fabo fafa faff fafo fako fala falk fall falo fara farb fark farl faro farr fbar fbla ffar ffff ffrr fkab flab flak flao flob flok floo flor foaf foak foal foar foba fofo fola folk foll folo folr foof fook fool for- fora forb fork forl foro forr frab frak frla frob frol k-lo kaaa kaab kaaf kaak kaal kaar kaba kabb kabf kabo kabr kafa kaff kafr kaka kakk kako kala kalb kalf kalk kall kalo kaoa kaok kaol kaor kara karb karf kark karl karo karr kbaa kbab kbak kbal kbar kbba kbbb kbbf kbbk kbbl kbbo kbbr kbfb kbff kbfk kbfl kbfo kbfr kbkb kbkf kbkk kbkl kbko kbkr kbla kblb kblf kbll kblo kblr kboa kbob kbok kboo kbra kbrb kbrf kbrk kbrl kbro kfab kfal kfar kfbk kffa kffb kfff kffk kfka kfkb kfla kflb kflf kfll kflo kfok kfoo kfor kfra kfro kfrr kkaa kkal kkar kkba kkbb kkbl kkbo kkbr kkfr kkkk kklb kklf kkll kklo kkoa kkob kkol kkoo kkor kkrb kkrf kkrk kkrl kkro kkrr klaa klab klaf klak klal klar klbb klbf klbl klfa klff klka klkk klkl klko klkr klla kllb kllk kloa klob klok klol kloo klor klrf klrk klrr koab koak koal koar koba kobb kobk kobo kobr kofa koff kofk kofo koka kokb kokf kokk koko kokr kola kolb kolf kolk koll kolo kolr koob kook kool kooo koor kora korb korf kork korl koro korr krab krak kral krar krba krbb krbk krbl krbr krff krfo krka krkk krko krkr krla krlf kroa krob krof krok krol kroo kror krrb krrf krrk krrl krro krrr laaa laak laal laar laba labo labr lafb laff laka lala lall lalo lara larb larf lark larr lbar lblr lkab lkal llao llll lloa lloo loaf loar lob- loba lobb lobo lofa loff loka lokk loko lola loll lolo loob loof look lool loor lora lork loro lral lrba lrrr oafo oall oara obak obal obba obbo obkb obla obok obol obor obra obro off- offa offo offr ofla ofor ofra okak okka okko okla oklo okok okol okor okra okro olaf olar olba olbo olfa olka olla ollo olof olor ooaa ooak ooba ooff oola oolo oooo oora orab orak oral orao orar orba orbb orbo orff orka orko orla orlo oro- orof orok oror orra orro raab raaf raak raba rabb rabk rabl rabo rafa raff raka rakk rala ralb ralf rall ralo raob raok raol rara rarb rarf rark raro rbaf rbbb rbbr rffl rkkf rlab roab roaf roak roar rob- roba robb robo roff rofl rofo roka rokk roko rokr rola rolf rolk roll rolo roob roof rook rool roor rora rork roro rrrr

-aaa- aabaa aabba aabra aakko abaab ababa abaka abako abala aball abalo abara abbar abfab abkar abkoo ablak