-al a-a a-b a-c aaa aab aac aae aaf aak aal aau ab- aba abb abc abe abf abk abl abu ac- aca acb acc ace acf ack acl acu aea aeb aec aee aef aek ael aeu af- afa afb afc afe aff afk afl afu aka akb akc ake akk akl aku al- ala alb alc ale alf alk all alu au- aua aub auc aue auf auk aul b-u baa bab bac bae baf bak bal bau bba bbb bbc bbe bbf bbk bbl bbu bca bcb bcc bce bcf bck bcl bcu be- bea beb bec bee bef bek bel beu bfa bfb bfc bfe bff bfl bfu bka bkb bkc bke bkf bkk bkl bla blb blc ble blf blk bll blu bua bub buc bue buf buk bul buu c-- caa cab cac cae caf cak cal cau cba cbb cbc cbe cbf cbk cbl cbu cca ccb ccc cce ccf cck ccl ccu ce- cea ceb cec cee cef cek cel ceu cfa cfb cfc cfe cff cfk cfl cfu cka ckb ckc cl- cla clb clc cle clf clk cll clu cua cub cuc cue cuf cuk cul cuu eaa eab eac eae eaf eak eal eau eba ebb ebc ebe ebf ebk ebl ebu ec- eca ecb ecc ece ecf eck ecl ecu eea eeb eec eee eef eek eel ef- efa efb efc efe eff efl eka ekb ekc eke ekf ekl eku ela elb elc ele elf elk ell elu eu- eua eub euc eue euf eul faa fab fac fae faf fak fal fau fba fbb fbc fbe fbf fbk fbl fbu fca fcb fcc fce fcf fck fcl fcu fea feb fec fee fef fek fel feu ffa ffc ffe fff ffk ffl ffu fka fkb fkc fkf fkk fkl fla flb flc fle flf fll flu fua fub fue fuf fuk ful fuu ka- kaa kab kac kae kaf kak kal kau kba kbb kbc kbe kbf kbk kbl kbu kca kcb kcc kce kck kcl kcu ke- kea keb kec kee kef kek kel kfa kfc kff kfu kkb kkc kke kkk kkl kku kl- kla klb klc klf klu kub kuc kue kuk kul kuu la- laa lab lac lae laf lak lal lau lba lbb lbc lbe lbf lbk lbl lbu lca lcb lcc lce lcf lck lcl lcu lea leb lec lee lef lek lel leu lfa lfb lfc lfe lff lfk lfl lfu lka lkb lkl lla llb llc lle llf llk lll llu lua lub luc lue luf luk lul luu ua- uaa uab uac uae uaf uak ual uau uba ubb ubc ube ubf ubk ubl ubu uca ucb ucc uce ucf uck ucl ucu uea ueb uec uee uef uel ufa ufc ufe uff ufl ufu uka ukb ukc uke ukf ukk ukl uku ula ulb ulc ule ulf ulk ull ulu uua uuc uue uuu

a-ak a-be a-fu aaaa aaab aaac aaae aaaf aaal aaba aabb aabc aabl aaca aacb aacc aace aacf aack aacl aacu aaea aaec aafa aafb aafc aaff aafl aaka aake aaku aala aalc aale aall aalu abaa abab abac abae abaf abak abal abau abb- abba abbb abbe abca abcb abcc abcf abcl abec abee abel abff abla able abua abue abuf abuk abul acaa acab acac acae acba acbl acca accc acce accf accu ace- acea acec acek acel acfc acfe acfl acke acla aclc acle aclu acu- acue acuf acul aeac aeaf aecb aecl aeka aela aelc afaa afak afca afcb afcc afcu afee afek afel affa affc afka afla aflc afle afua afue akaa akae akal akca akee akel akeu akka akku akle akua alaa alac alae alak alal alau alb- alba albc albe albu alca alcc alce alea alec alee alef alek aleu alfa alfe alk- alka alkb alke alku all- alla alle alll allu alua aluf aluk auaa aube auca auce auel aufc aufe auke aul- aula aule aulf aull aulu baaa baaf baak baal baba babb babe babu bac- baca bacc bace back baek bael bafc baff bak- baka bake bakl baku bala balc bale balf balk ball balu bau- bauf bauk baul bbau bbbb bbeb bbfc bblb bcaa bcbc bcca bccc bccl bcec bcfc bcuc beaf beak beal beau beba bebb bebe beca beck becu beeb beef beek beel befa befe beff beka beke bela bele belk bell belu beuk bfca bffl blaa blab blac blae blak blau blcu blea bleb blee blek bleu blfc blkb blub blue bluf bual buba bubb bube bubu buca bucc buce buck bucu buea buel bueu bufc bufe buff buka buke bukk buku bula bulb bule bulk bull bulu caaa caab caac caaf caal caba cabe cabf cabu cac- caca cacc cace cack caec caeu cafa cafb cafc cafe caff cafl cafu caka cake cala calc cale calf calk call calu cauc cauf cauk caul cbac cbal cbbc cbca cbcc cbce cbcl cbcu cbea cbec cbee cbef cbfb cbfc cbka cbkl cblb cblc ccaa ccab ccac ccaf ccba ccbc ccca cccb cccc cccf cccl cccu ccee ccel ccfa ccfc ccff ccfl ccla cclc ccuc ceac ceal ceba cebu cec- ceca cece ceeb ceec ceel cef- cefa cefc ceke cel- cela celc cele celf cell cfaa cfab cfac cfae cfbc cfca cfcb cfcf cfcl cffb ckac ckbc ckbe ckck ckcl cklf clab claf clau clea clec clee clef clek cleu club clue cuau cub- cuba cubb cube cuca cucc cuce cuck cuek cufa cufc cuff cuk- cuka cuke cula culb culc cule culk cull e-cl e-la eaaf eaba eaca eacc eaec eafb eala ealc eale ebac ebal ebba ebbc ebcc ebel ebfc ebla ebul ecaa ecac ecal ecbc ecbe ecca eccb eccc ecce eccl ecef ecfa ecfc ecka ecla ecua eeca eeea eeee eefa eefe eefl eeka eeke eele efab efca effa efke efla efua eka- ekab ekeb ekek ekfc ekka el-b elab elac elal elba elbe elbu elca elcb elce elea elec elee elef elek elfa elfc elfe elka