a-be a-wa aaaa aaab aaad aaae aaaf aaar aaba aabb aabd aabt aabw aada aade aadt aaea aafa aafb aafd aaff aara aard aare aart aata aatf aatt aatw aawt aaww abaa abab abad abae abaf abar abat abaw abb- abba abbb abbe abbr abbt abda abed abee aber abet abff abra abta abwa abwe abwr adaa adab adad adae adar adat adaw adba adda addd adde addr adea adeb adee ader adet adew adfa adra adre adta adwa aeaf aede aedt aeer aer- aera aerd aeta aetf aetr aett afaa afad afar afat afdb afee afer afet afew affa afft affw afr- afra afre afta afte arab arad arae araf arar arat araw arba arbe arda arde ardf area ared aree aref aret arew arfa arfb arff arft arr- arra arre arrr arrt arta arte artr arwa arwe at-t ataa atab atad atae atar atat atdt atea ated atee atef ater atew atfb atfe atra atre atta atte attr atwa atwt awad awae awar awbe awe- aweb awed awee awer awet awre awwa baaa baad baaf baar baat baba babb babe babr bada badb badd bade badr baed baer baff baft bar- bara barb bard bare barf barr bart bata bate batf batt baw- bawd bawe bbad bbbb bbdd bbeb bbet bbwr bd-r bead beaf bear beat beaw beba bebb bebe beda bede beeb beed beef beer beet befa befe beff beft bera berd bere berr bert beta bete bett betw bewa bewe bfta bftt brab brad brae braf brat braw brda brdt brea breb bred bree bref brer bret brew brrr brwe btaa btaf btdt btrt bttb bwaa daab daad daae daar daba dabb dabt dada dade daeb daer dafa dafe daff daft dara darb dard dare darf darr dart data date datr datt dawa dawd dawe dawr dawt dbar dbtt dddd ddre dead deae deaf dear deaw deba debe debt deda dedd dede deeb deed deef deer deet defe deff deft der- dera derb dere derf derr deta dete detr dewa dewe dfaf dfdt dfer dffa dfrf dftr draa drab drad draf drar drat draw drba drda drea dred dree dref dret drew drra dtaa dted dwad dwar dwbe dwbr dwdd dwer dwet dwfb dwrd dwrt dwrw dwte dwwe dwww eaaf eaba eada eadb eadd eafb eara earb eard eare eart earw eata eate ebba ebbr ebbw ebed eber edad edar edaw edda edde ede- edea eder edfa edra edta eede eeea eeee eefa eefe eera eeta eete efab efbr efda efet effa eft- efta erad eraf erat erba erbb erbe erda erde erdf ereb ered erer eret erew erft erra erre erta erwt etat etbr etee eter etfa etfb etfe etra etre etta ette ewer ewew ewft ewre ewte faaa faad faba fabd fabe fada fadd fade faeb fafa fafe faff fara farb fard fare farr fart fata fate fatf fatt fawd fawe fawf fawt fbar fead feaf fear feat feba feda fede feeb feed feer feet fefe feff fera ferb ferd fere ferr fert feta fete fetr fett fewa fewd fewe fewt ffar ffee ffff ffrr fftf fftw ffwd frab frad frae frat frea fred free fret frew frta ftea fter fttw fwdd fwde raab raad raaf raat raba rabb rabe rada radd rade radr radt raed raef raer rafa rafe raff raft rara rarb rare rarf rata rate ratf ratt rawa rawe rawr raww rbaf rbbb rbbr rder rdfa rea- read reae reaf rear reat reba rebb rebe reda redd rede redr reeb reed reef reet refd refe reff refr reft rera rerd rere rert reta retd rete retr rett rewa rewe rfae rfef rrad rrat rred rrrr rtbf rtdt rtee rtfb taa- taaf taar taat taba tabb tabe tada tade taer tafa tafe taff taft tara tarb tard tare tarf tarr tart tata tatb tate tatr tatt tawa tawd tawe tawt taww tbaf tbar tbrb tbta tddb tdff tdra tead tear teat teaw teba teda tedd tede teed teef teer teet teff teft ter- tera tere terf terr teta tete tetr tett tewa tfae tfeb traa trab trad trae traf trat traw tre- trea tred tree tref tret trew trfd trfr trra trte trtr trwe ttab ttbb tter ttfa ttff tttt twae twat twbt twdt twee twer waaa waad waaf waar waat waaw waba wabb wabd wabe wabf wabr wabt wabw wada wadb wadd wade wadr wadt waeb waed waee waer waet waew wafa wafb wafd wafe waff wafr waft war- wara warb ward ware warf warr wart warw wata watb watd wate watr watt watw wawa wawb wawd wawe wawf wawt wbaa wbab wbad wbae wbaf wbar wbat wbbb wbbd wbbe wbbf wbbr wbbt wbbw wbdr wbdt wbea wbeb wbed wber wbet wbew wbfa wbfb wbfd wbfe wbff wbfr wbft wbfw wbrb wbrd wbrf wbrr wbrt wbrw wbta wbte wbtf wbtr wbtt wbtw wbwb wbwt wdab wdad wdae wdaf wdba wdbd wdbr wdbt wddd wdde wddw wdea wdeb wded wdef wder wdet wdfb wdrb wdre wdrr wdrt wdtb wdte wdtr wdtw wdwd wdwr weaa wead weaf wear weat webb webd webe webf webt weda wedb wedd wede wedr wedt wedw weeb weed weef weer weet wefa wefe weff wefr weft wer- wera werb werd were werf werr wert werw weta wetb wetd wete wetf wetr wett wewe wfaa wfab wfad wfae wfar wfat wfaw wfbd wfbe wfbf wfbr wfbt wfda wfdd wfdf wfdr wfea wfeb wfed wfer wfff wfra wfrb wfrd wfre wfrf wfrw wfta wftd wfte wftf wftr wftw wfwa wraa wrab wrad wrae wraf wrar wrat wraw wrba wrbb wrbe wrbf wrbt wrbw wrda wrdb wrdd wrdf wrdr wrdt wrdw wreb wred wree wrer wret wrew wrfb wrfd wrfe wrff wrft wrfw wrra wrrb wrrd wrre wrrw wrta wrtb wrte wrtr wrtw wrwa wrwb wrwd wrwr wtab wtad wtae wtar wtaw wtbb wtbf wtbr wtda wtdr wtrb wtre wtrt wtrw wtta wttb wtte wttf wttr wttt wttw wtwa wtwb wtwf wtwr wtwt wtww wwab wwba wwbb wwbd wwbf wwbr wwbt wwdb wwdr wwdw wwea wweb wwer wwet wwfa wwfd wwfe