a-be a-ha aaaa aaab aaac aaad aaae aaaf aaah aaal aaba aabb aabc aabd aabh aabl aaca aacb aacc aacd aace aacf aach aacl aada aadc aade aaea aaec aafa aafb aafc aafd aaff aafl aaha aahl aala aalc aald aale aall abaa abab abac abad abae abaf abal abb- abba abbb abbe abca abcb abcc abcd abcf abch abcl abda abec abed abee abel abff abha abla able acaa acab acac acad acae acba acbl acca accc accd acce accf acch acda acdb acdc acde acdf ace- acea acec aced aceh acel acfc acfd acfe acfl acha ache achh achl acla aclc acle adaa adab adac adad adae adah adal adba adbc adcc adda addc addd adde addl adea adeb adee adeh adel adfa adfc adfl adha adhd adle aeac aeaf aecb aecl aede aela aelc afaa afad afca afcb afcc afch afdb afdc afdl afee afel affa affc afla aflc afle ahab ahac ahad ahah ahal ahdl ahed ahel ahfa ahha ahla ahle alaa alac alad alae alal alb- alba albc albe alca alcc alce ald- alda alde aldl alea alec aled alee alef aleh alfa alfe alha all- alla alle allh alll baaa baad baaf baah baal baba babb babe bac- baca bacc bace bach bada badb badd bade badh baed bael bafc baff baha bahl bala balc bald bale balf ball bbad bbbb bbch bbdd bbeb bbfc bblb bcaa bcbc bcca bccc bccl bcda bcde bcec bcfc bchd bche bdbc bddc bddh bdle bead beaf beah beal beba bebb bebe beca bech beda bede bedl beeb beed beef beel befa befe beff bela beld bele bell bfca bffl bhca bhcc bhdl bhel bhff blaa blab blac blad blae blah bldc blea bleb bled blee bleh blfc c-cd caaa caab caac caaf caah caal caba cabe cabf cac- caca cacc cace cach cada cadc cadd cade caec cafa cafb cafc cafe caff cafl caha cahe cahl cala calc cald cale calf call cbac cbal cbbc cbca cbcc cbce cbcl cbdb cbdc cbea cbec cbee cbef cbfb cbfc cbha cbhl cblb cblc ccaa ccab ccac ccad ccaf ccba ccbc ccca cccb cccc cccf cccl ccdc ccdf ccdh cced ccee ccel ccfa ccfc ccfd ccff ccfl ccha cche cchl ccla cclc cd-e cdaa cdac cdad cdba cdbf cdda cddb cddl cdec cdef cdfa cdfe ceac cead ceal ceba cec- ceca cece ceda cedd cede ceeb ceec ceel cef- cefa cefc cehl cel- cela celc cele celf cell cfaa cfab cfac cfae cfbc cfca cfcb cfcf cfcl cfda cffb chaa chab chac chad chae chaf chah chal chca chce chch chea cheb chec ched chee chef cheh chel chfa chfc chha chlc clab clad claf clcd cldc clea clec cled clee clef daab daad daae daal daba dabb daca dace dada dade daeb dafa dafc dafe daff daha dahe dahl dala dale dalf dall dbcc dbfc dcbc dcca dccb dccc dccl dcdb dcfc dche dddd ddlc deac dead deae deaf deal deba debe dec- deca decc decd dece decl deda dedd dede deeb deed deef deel defe deff deha dela deld dele delf dell dfaf dfcc dffa dhaa dhad dhal dhec dhed dhee dhfc dlab dlbd dlha e-cl e-la eaaf eaba eabh eaca eacc each eada eadb eadd eaec eafb eala ealc eald eale ebac ebal ebba ebbc ebcc ebed ebel ebfc ebla ecaa ecac ecad ecal ecbc ecbe ecca eccb eccc ecce eccl ecdc ecdf ecdl eced ecef ecfa ecfc echa eche echl ecla edac edad edah edca edda eddc edde ede- edea edeh edel edfa edfl edla edle eeca eede eeea eeee eefa eefe eefl eele efab efca efda effa efla ehaa ehcc ehdd ehea eheh ehel ehle el-b elab elac elad elah elal elba elbe elca elcb elce elch elda elde elea elec eled elee elef eleh elfa elfc elfe ella elle faaa faac faad faah faba fabd fabe faca facc face fach fada fadd fade faeb fafa fafc fafe faff faha fahd fala falc fald fale fall fbla fble fcab fcal fcba fcca fccf fcch fcda fdca fead feaf feal feba fece fech feda fede feeb feed feel fefc fefe feff fehd fehl fela feld fele felf fell ffcc ffee ffff fhlb flab flac flad flae flcl flea fled flee haab haad haaf haal haba habe hace hada hade hadf hadh hadl haec haed hafb hafd hafe haff haha hal- hala halb hald hale half hall hbcd hbfc hcbc hcca hccb hccc hcch hcfa hcfc hdca hdda hdfc head heaf heah heal hebb hebe heca hech heda hedd hede heeb heed heef heel hefd hefe hehe hela held hele helf hell hfba hfce hhaa hhcl hhhh hhla hlah hlde laaa laac laad laal laba labe laca lacc lace lach lacl lada ladd lade lael lafb lafc lafe laff laha lahe lala lald lale lall lbcc lcac lcad lcbc lcca lccc lcce lcdd lcfc lchc ldcf ldha leaa lead leaf leah leal leba lebd leca lece lech leda lede leea leed leef leel lefa lefe leff lehe lela lele lell lfca lfcc lfhe lhec lhee lhhh llcc lldb lldc llef lllc llll