a-be aaaa aaab aaad aaae aaaf aaal aaba aabb aabd aabl aabt aada aade aadt aaea aafa aafb aafd aaff aafl aala aald aale aall aata aatf aatt abaa abab abad abae abaf abal abat abb- abba abbb abbe abbt abda abed abee abel abet abff abla able abta adaa adab adad adae adal adat adba adda addd adde addl adea adeb adee adel adet adfa adfl adle adta aeaf aede aedt aela aeta aetf aett afaa afad afat afdb afdl afee afel afet affa afft afla afle afta afte alaa alad alae alal alat alb- alba albe ald- alda alde aldl alea aled alee alef alet alfa alfe all- alla alle alll alta alte at-l at-t ataa atab atad atae atal atat atdt atea ated atee atef atel atfb atfe atla atle atta atte baaa baad baaf baal baat baba babb babe bada badb badd bade baed bael baff baft bala bald bale balf ball balt bata bate batf batt bbad bbbb bbdd bbeb bbet bblb bdle bead beaf beal beat beba bebb bebe beda bede bedl beeb beed beef beel beet befa befe beff beft bela beld bele bell belt beta bete bett bffl bfta bftt blaa blab blad blae blat blbt blea bleb bled blee blet btaa btaf btdt btla bttb daab daad daae daal daba dabb dabt dada dade daeb dafa dafe daff daft dala dale dalf dall dalt data date datt dbtt dddd dead deae deaf deal deba debe debt deda dedd dede deeb deed deef deel deet defe deff deft dela deld dele delf dell delt deta dete dfaf dfdt dffa dlab dlbd dtaa dted dtla dtle e-la eaaf eaba eada eadb eadd eafb eala eald eale eata eate ebal ebba ebed ebel ebla edad edda edde ede- edea edel edfa edfl edla edle edta eede eeea eeee eefa eefe eefl eele eeta eete efab efda efet effa efla eft- efta el-b elab elad elal elat elba elbe elda elde elea eled elee elef elet elfa elfe elft ella elle elta elte etal etat etee etel etfa etfb etfe etla etta ette faaa faad faba fabd fabe fada fadd fade faeb fafa fafe faff fala fald fale fall falt fata fate fatf fatt fbla fble fdtl fead feaf feal feat feba feda fede feeb feed feel feet fefe feff fela feld fele felf fell felt feta fete fett ffee ffff fftf flab flad flae flat flea fled flee flet ft-l ftea ftlb laaa laad laal laat laba labe lada ladd lade lael laet lafb lafe laff laft lala lald lale lall lata latd late latt leaa lead leaf leal leat leba lebd leda lede ledt leea leed leef leel leet lefa lefe leff left lela lele lell leta lete lett lfat llat lldb llef llet llll ltae ltbf ltbl ltee taa- taaf taal taat taba tabb tabe tabl tada tade tael tafa tafe taff taft tala tale tall tata tatb tate tatt tbaf tbta tdal tddb tdff tead teal teat teba teda tedd tede teed teef teel teet teff tefl teft tel- tela teld tele tell telt teta tete tett tfae tfal tfeb ttab ttbb ttfa ttff tttt