-al a-a a-b a-c a-t aaa aab aac aae aak aal aat ab- aba abb abc abe abk abl abt ac- aca acb acc ace ack acl act aea aeb aec aee aek ael aet aka akb akc ake akk akl al- ala alb alc ale alk all alt at- ata atb atc ate atl att baa bab bac bae bak bal bat bba bbb bbc bbe bbk bbl bbt bca bcb bcc bce bck bcl bct be- bea beb bec bee bek bel bet bka bkb bkc bke bkk bkl bkt bla blb blc ble blk bll blt bta btb btc bte btk btl btt c-- caa cab cac cae cak cal cat cba cbb cbc cbe cbk cbl cbt cca ccb ccc cce cck ccl cct ce- cea ceb cec cee cek cel cet cka ckb ckc ckt cl- cla clb clc cle clk cll clt cta ctb ctc cte ctk ctl ctt eaa eab eac eae eak eal eat eba ebb ebc ebe ebk ebl ebt ec- eca ecb ecc ece eck ecl ect eea eeb eec eee eek eel eet eka ekb ekc eke ekl ekt ela elb elc ele elk ell elt eta etb etc ete etk etl ett k-t ka- kaa kab kac kae kak kal kat kba kbb kbc kbe kbk kbl kca kcb kcc kce kck kcl kct ke- kea keb kec kee kek kel ket kkb kkc kke kkk kkl kkt kl- kla klb klc klt kta ktb ktc kte ktk ktl ktt la- laa lab lac lae lak lal lat lba lbb lbc lbe lbk lbl lbt lca lcb lcc lce lck lcl lct lea leb lec lee lek lel let lka lkb lkl lkt lla llb llc lle llk lll llt lta ltb ltc lte ltk ltl ltt taa tab tac tae tak tal tat tba tbb tbc tbe tbk tbl tbt tca tcb tcc tce tck tcl tct te- tea teb tec tee tek tel tet tka tkb tkc tke tkk tkl tkt tla tlc tle tlk tll tlt tta ttb ttc tte ttk ttl ttt

a-ak a-be aaaa aaab aaac aaae aaal aaba aabb aabc aabl aabt aaca aacb aacc aace aack aacl aact aaea aaec aaka aake aala aalc aale aall aata aatc aatk aatt abaa abab abac abae abak abal abat abb- abba abbb abbe abbt abca abcb abcc abcl abct abec abee abel abet abla able abta ac-t acaa acab acac acae acat acba acbl acca accc acce acct ace- acea acec acek acel acet acke acla aclc acle acta actc acte actl actt aeac aecb aecl aect aeka aela aelc aeta aetc aett akaa akae akal akca akee akel akka akle akte alaa alac alae alak alal alat alb- alba albc albe alca alcc alce alea alec alee alek alet alk- alka alkb alke all- alla alle alll alta alte at-l at-t ataa atab atac atae atak atal atat atca atcc atck atcl atea atec atee atel atka atkt atla atle atta atte baaa baak baal baat baba babb babe bac- baca bacc bace back bact baek bael bak- baka bake bakl bakt bala balc bale balk ball balt bata batc bate batt bbbb bbeb bbet bblb bcaa bcat bcbc bcca bccc bccl bcec bcet bctc beak beal beat beba bebb bebe beca beck beeb beek beel beet beka beke bela bele belk bell belt beta betc bete bett blaa blab blac blae blak blat blbt blea bleb blee blek blet blkb btaa btcc btcl btec btek btla bttb caaa caab caac caal caat caba cabe cac- caca cacc cace cack caec caka cake cala calc cale calk call calt cat- cata catb catc cate catt cbac cbal cbat cbbc cbca cbcc cbce cbcl cbct cbea cbec cbee cbet cbka cbkl cblb cblc cbta cbtc cbtl ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccl ccee ccel ccla cclc cctb cctc cctl cctt ceac ceal ceat ceba cec- ceca cece cect ceeb ceec ceel ceke cel- cela celc cele cell celt cet- ceta cete ckac ckat ckbc ckbe ckck ckcl cktb clab clat clea clec clee clek clet cltb cltc ctab ctae ctal ctba ctca ctec ctle ctta e-cl e-la eaba eaca eacc eaec eala ealc eale eata eate ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecat ecbc ecbe ecca eccb eccc ecce eccl ecct ecka ecla eclt ect- ecta ectc eeca eeea eeee eeka eeke eele eeta eetc eete eka- ekab ekeb ekek eket ekka ekta el-b elab elac elal elat elba elbe elca elcb elce elea elec elee elek elet elka elke ella elle elta elte etak etal etat etbc etcc etec etee etel etka etla etta ette kaaa kaab kaak kaal kaat kaba kabb kabc kabe kacb kacc kace kacl kact kael kaet kaka kakc kake kakk kakt kala kalb kalc kale kalk kall kalt kat- kata katb katc kate katk katl katt kbaa kbab kbac kbae kbak kbal kbat kbba kbbb kbbc kbbe kbbk kbbl kbbt kbca kbcb kbce kbck kbcl kbct kbeb kbec kbee kbek kbel kbet kbkb kbkk kbkl kbla kblb kble kbll kblt kbta kbtb kbtc kbte kbtk kbtl kbtt kcaa kcab kcac kcal kcat kcba kcbc kcbk kcbl kcca kccb kccc kcck kccl kcct kcea kceb kcec kcee kcel kcet kckc kckk kckl kcla kclc kcle kclk kcll kclt kcta kctb kctc kcte kea- keak keal keat keba kebb kebc kebe kebt keca keck keek keel keet keka kekb kekc keke kekl kela kele kelk kell kelt ket- keta ketc kete ketk kett kkaa kkac kkal kkat kkba kkbb kkbe kkbl kkbt kkcb kkck kkcl kkct kkea kkkk kklb kklc kkll kktc kktk kktl klaa klab klac klak klal klat klbb klbc klbe klbl klbt klca klcb klcc klce klck klcl klea kleb klec klee klek klet klka klkc klkk klkl klla kllb kllc klle kllk kltc kltk kltt ktaa ktae ktak ktal ktat ktba ktbb ktbc ktbl ktbt ktcc ktce ktck ktcl ktea ktec ktee ktek ktel ktkb ktkc ktke