-al a-a a-b a-c a-t aaa aab aac aae aaf aak aal aat ab- aba abb abc abe abf abk abl abt ac- aca acb acc ace acf ack acl act aea aeb aec aee aef aek ael aet af- afa afb afc afe aff afk afl aft aka akb akc ake akk akl al- ala alb alc ale alf alk all alt at- ata atb atc ate atf atl att baa bab bac bae baf bak bal bat bba bbb bbc bbe bbf bbk bbl bbt bca bcb bcc bce bcf bck bcl bct be- bea beb bec bee bef bek bel bet bfa bfb bfc bfe bff bfl bft bka bkb bkc bke bkf bkk bkl bkt bla blb blc ble blf blk bll blt bta btb btc bte btf btk btl btt c-- caa cab cac cae caf cak cal cat cba cbb cbc cbe cbf cbk cbl cbt cca ccb ccc cce ccf cck ccl cct ce- cea ceb cec cee cef cek cel cet cfa cfb cfc cfe cff cfk cfl cft cka ckb ckc ckt cl- cla clb clc cle clf clk cll clt cta ctb ctc cte ctf ctk ctl ctt eaa eab eac eae eaf eak eal eat eba ebb ebc ebe ebf ebk ebl ebt ec- eca ecb ecc ece ecf eck ecl ect eea eeb eec eee eef eek eel eet ef- efa efb efc efe eff efl eft eka ekb ekc eke ekf ekl ekt ela elb elc ele elf elk ell elt eta etb etc ete etf etk etl ett faa fab fac fae faf fak fal fat fba fbb fbc fbe fbf fbk fbl fbt fca fcb fcc fce fcf fck fcl fct fea feb fec fee fef fek fel fet ffa ffc ffe fff ffk ffl fft fka fkb fkc fkf fkk fkl fkt fla flb flc fle flf fll flt fta ftb ftc fte ftf ftk ftl ftt k-t ka- kaa kab kac kae kaf kak kal kat kba kbb kbc kbe kbf kbk kbl kca kcb kcc kce kck kcl kct ke- kea keb kec kee kef kek kel ket kfa kfc kff kkb kkc kke kkk kkl kkt kl- kla klb klc klf klt kta ktb ktc kte ktf ktk ktl ktt la- laa lab lac lae laf lak lal lat lba lbb lbc lbe lbf lbk lbl lbt lca lcb lcc lce lcf lck lcl lct lea leb lec lee lef lek lel let lfa lfb lfc lfe lff lfk lfl lft lka lkb lkl lkt lla llb llc lle llf llk lll llt lta ltb ltc lte ltf ltk ltl ltt taa tab tac tae taf tak tal tat tba tbb tbc tbe tbf tbk tbl tbt tca tcb tcc tce tcf tck tcl tct te- tea teb tec tee tef tek tel tet tfa tfb tfc tfe tff tfk tfl tft tka tkb tkc tke tkk tkl tkt tla tlc tle tlf tlk tll tlt tta ttb ttc tte ttf ttk ttl ttt

a-ak a-be aaaa aaab aaac aaae aaaf aaal aaba aabb aabc aabl aabt aaca aacb aacc aace aacf aack aacl aact aaea aaec aafa aafb aafc aaff aafl aaka aake aala aalc aale aall aata aatc aatf aatk aatt abaa abab abac abae abaf abak abal abat abb- abba abbb abbe abbt abca abcb abcc abcf abcl abct abec abee abel abet abff abla able abta ac-t acaa acab acac acae acat acba acbl acca accc acce accf acct ace- acea acec acek acel acet acfc acfe acfl acft acke acla aclc acle acta actc acte actf actl actt aeac aeaf aecb aecl aect aeka aela aelc aeta aetc aetf aett afaa afak afat afca afcb afcc afee afek afel afet affa affc afft afka afla aflc afle afta aftc afte 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 alef alek alet alfa alfe alk- alka alkb alke all- alla alle alll alta alte at-l at-t ataa atab atac atae atak atal atat atca atcc atcf atck atcl atea atec atee atef atel atfb atfc atfe atka atkt atla atle atta atte baaa baaf baak baal baat baba babb babe bac- baca bacc bace back bact baek bael bafc baff baft bak- baka bake bakl bakt bala balc bale balf balk ball balt bata batc bate batf batt bbbb bbeb bbet bbfc bblb bcaa bcat bcbc bcca bccc bccl bcec bcet bcfc bctc beaf beak beal beat beba bebb bebe beca beck beeb beef beek beel beet befa befe beff beft beka beke bela bele belk bell belt beta betc bete bett bfca bffl bfta bftt blaa blab blac blae blak blat blbt blea bleb blee blek blet blfc blkb btaa btaf btcc btcl btec btek btfc btla bttb caaa caab caac caaf caal caat caba cabe cabf cac- caca cacc cace cack caec cafa cafb cafc cafe caff cafl caka cake cala calc cale calf calk call calt cat- cata catb catc cate catf catt cbac cbal cbat cbbc cbca cbcc cbce cbcl cbct cbea cbec cbee cbef cbet cbfb cbfc cbka cbkl cblb cblc cbta cbtc cbtf cbtl ccaa ccab ccac ccaf ccat ccba ccbc ccca cccb cccc cccf cccl ccee ccel ccfa ccfc ccff ccfl ccla cclc cctb cctc cctl cctt ceac ceal ceat ceba cec- ceca cece cect ceeb ceec ceel cef- cefa cefc ceke cel- cela celc cele celf cell celt cet- ceta cete cfaa cfab cfac cfae cfbc cfbt cfca cfcb cfcf cfcl cffb cfta cftc cfte cftk cftl ckac ckat ckbc ckbe ckck ckcl cklf cktb clab claf clat clea clec clee clef clek clet cltb cltc ctab ctae ctal ctba ctca ctcf ctec ctfc ctle ctta e-cl e-la eaaf eaba eaca eacc eaec eafb eala ealc eale eata eate ebac ebal ebba ebbc ebcc ebel ebfc ebla ecaa ecac ecal ecat ecbc ecbe ecca eccb eccc ecce eccl ecct ecef ecfa ecfc