a-be a-ha aaaa aaab aaac aaad aaae aaah aaba aabb aabc aabd aabh aabt aaca aacb aacc aacd aace aach aact aada aadc aade aadt aaea aaec aaha aata aatc aatt abaa abab abac abad abae abat abb- abba abbb abbe abbt abca abcb abcc abcd abch abct abda abec abed abee abet abha abta ac-t acaa acab acac acad acae acat acba acca accc accd acce acch acct acda acdb acdc acde acdt ace- acea acec aced aceh acet acha ache achh acht acta actc acte acth actt adaa adab adac adad adae adah adat adba adbc adcc adda addc addd adde adea adeb adee adeh adet adha adhd adta aeac aecb aect aede aedt aeta aetc aett ahab ahac ahad ahah ahat ahed ahet ahha ahta ahte at-t ataa atab atac atad atae atat atca atcc atch atdt atea atec ated atee atha athe atta atte baaa baad baah baat baba babb babe bac- baca bacc bace bach bact bada badb badd bade badh baed baha baht bata batc bate bath batt bbad bbbb bbch bbdd bbeb bbet bcaa bcat bcbc bcca bccc bcda bcde bcec bcet bchd bche bctc bdbc bddc bddh bead beah beat beba bebb bebe beca bech beda bede beeb beed beet beta betc bete beth bett bhat bhca bhcc bhet btaa btcc btdt btec bttb c-cd caaa caab caac caah caat caba cabe cac- caca cacc cace cach cada cadc cadd cade caec caha cahe caht cat- cata catb catc catd cate cath catt cbac cbat cbbc cbca cbcc cbce cbct cbdb cbdc cbea cbec cbee cbet cbha cbta cbtc ccaa ccab ccac ccad ccat ccba ccbc ccca cccb cccc ccdc ccdh cced ccee ccha cche cctb cctc cctt cd-e cdaa cdac cdad cdba cdda cddb cdec ceac cead ceat ceba cec- ceca cece cect ceda cedd cede cedt ceeb ceec cet- ceta cete chaa chab chac chad chae chah chat chca chce chch chea cheb chec ched chee cheh chet chha chtt ctab ctae ctba ctca ctec ctta daab daad daae daba dabb dabt daca dace dact dada dade daeb daha dahe data date datt dbcc dbtt dcbc dcca dccb dccc dcct dcdb dche dctc dddd deac dead deae deba debe debt dec- deca decc decd dece dect deda dedd dede deeb deed deet deha deta dete deth dhaa dhad dhat dhec dhed dhee dtaa dtac dtcc dted dthd eaba eabh eaca eacc each eada eadb eadd eaec eata eate eath ebac ebba ebbc ebcc ebed ecaa ecac ecad ecat ecbc ecbe ecca eccb eccc ecce ecct ecdc eced echa eche echt ect- ecta ectc ecth edac edad edah edca edda eddc edde ede- edea edeh edta eeca eede eeea eeee eeta eetc eete eeth ehaa ehcc ehdd ehea eheh ehte etah etat etbc etcc etch etec etee eth- etha ethe etta ette haab haad haat haba habe habt hace hada hade hadh haec haed haet haha haht hata hatb hate hath hatt hbcd hcat hcbc hcca hccb hccc hcch hdca hdda hdtt head heah heat hebb hebe heca hech hect heda hedd hede heeb heed heet hehe heta hete heth hett hhaa hhat hhhh htab htcc htea htet taa- taat taba tabb tabc tabe taca tacc tace tach tact tada tade taec taha tahe tata tatb tate tath tatt tbca tbcb tbcc tbcd tbce tbta tcad tcca tccc tcdd tch- tcha tche tchh tctc tdac tddb teac tead teat teba teca tech tect teda tedd tede teec teed teet teta tete teth tett thaa thad thae that thca thch the- thea theb thec thed thee thet thtb ttab ttbb tttt