-al a-a a-b a-c a-t aaa aab aac aae aak aal aam aat ab- aba abb abc abe abk abl abm abt ac- aca acb acc ace ack acl acm act aea aeb aec aee aek ael aem aet aka akb akc ake akk akl akm al- ala alb alc ale alk all alm alt ama amb amc ame amk aml amm amt at- ata atb atc ate atl atm att baa bab bac bae bak bal bam bat bba bbb bbc bbe bbk bbl bbm bbt bca bcb bcc bce bck bcl bcm bct be- bea beb bec bee bek bel bem bet bka bkb bkc bke bkk bkl bkm bkt bla blb blc ble blk bll blm blt bma bmb bmc bme bmk bml bmm bmt bta btb btc bte btk btl btm btt c-- caa cab cac cae cak cal cam cat cba cbb cbc cbe cbk cbl cbm cbt cca ccb ccc cce cck ccl ccm cct ce- cea ceb cec cee cek cel cem cet cka ckb ckc ckm ckt cl- cla clb clc cle clk cll clm clt cma cmb cmc cme cmk cml cmm cmt cta ctb ctc cte ctk ctl ctm ctt eaa eab eac eae eak eal eam eat eba ebb ebc ebe ebk ebl ebm ebt ec- eca ecb ecc ece eck ecl ecm ect eea eeb eec eee eek eel eem eet eka ekb ekc eke ekl ekt ela elb elc ele elk ell elm elt em- ema emb emc eme emk eml emm emt eta etb etc ete etk etl etm ett k-t ka- kaa kab kac kae kak kal kam kat kba kbb kbc kbe kbk kbl kbm kca kcb kcc kce kck kcl kcm kct ke- kea keb kec kee kek kel kem ket kkb kkc kke kkk kkl kkm kkt kl- kla klb klc klm klt kma kmb kmc kme kmk kml kmm kmt kta ktb ktc kte ktk ktl ktm ktt la- laa lab lac lae lak lal lam lat lba lbb lbc lbe lbk lbl lbm lbt lca lcb lcc lce lck lcl lcm lct lea leb lec lee lek lel lem let lka lkb lkl lkt lla llb llc lle llk lll llm llt lma lmb lmc lme lmk lml lmm lmt lta ltb ltc lte ltk ltl ltm ltt maa mab mac mae mak mal mam mat mba mbb mbc mbe mbk mbl mbm mbt mc- mca mcb mcc mce mck mcl mcm mct mea meb mec mee mek mel mem met mka mkb mkc mke mkk mkl mkm mkt mla mlb mlc mle mlk mll mlm mlt mma mmb mmc mme mmk mml mmm mmt mta mtb mtc mte mtk mtl mtm mtt taa tab tac tae tak tal tam tat tba tbb tbc tbe tbk tbl tbm tbt tca tcb tcc tce tck tcl tcm tct te- tea teb tec tee tek tel tem tet tka tkb tkc tke tkk tkl tkm tkt tla tlc tle tlk tll tlm tlt tma tmb tmc tme tmk tml tmm tmt tta ttb ttc tte ttk ttl ttm ttt

a-ak a-be aaaa aaab aaac aaae aaal aaam aaba aabb aabc aabl aabm aabt aaca aacb aacc aace aack aacl aacm aact aaea aaec aaem aaka aake aala aalc aale aall aama aamb aamc aame aata aatc aatk aatt abaa abab abac abae abak abal abam abat abb- abba abbb abbe abbt abca abcb abcc abcl abct abec abee abel abet abla able abma abmb abmc abmt abta ac-t acaa acab acac acae acat acba acbl acca accc acce accm acct ace- acea acec acek acel acem acet acke acla aclc acle acma acmc acme acta actc acte actl actt aeac aecb aecl aect aeka aela aelc aemt aeta aetc aett akaa akae akal akam akca akee akel akka akle akte alaa alac alae alak alal alam alat alb- alba albc albe albm alca alcc alce alea alec alee alek alem alet alk- alka alkb alke all- alla alle alll alma almc alme alta alte altm amaa amac amae amal amam amat amb- amba ambe amca amcc amec amee amel amet amka amla amm- amma amme amta amtc amte amtk at-l at-t ataa atab atac atae atak atal atat atca atcc atck atcl atea atec atee atel atem atka atkt atla atle atm- atma atme atml atta atte baaa baak baal baam baat baba babb babe babm bac- baca bacc bace back bact baek bael bak- baka bake bakl bakt bala balc bale balk ball balm balt bama bamb bamc bame baml bamm bata batc bate batt bbbb bbcm bbeb bbet bblb bcaa bcam bcat bcbc bcca bccc bccl bccm bcec bcet bcma bctc beak beal beam beat beba bebb bebe beca beck beeb beek beel beem beet beka beke bela bele belk bell belm belt bema beme beta betc bete bett blaa blab blac blae blak blam blat blbt blea bleb blee blek blem blet blkb blme bmaa bmce bmtc btaa btcc btcl btec btek btla bttb caaa caab caac caal caam caat caba cabe cac- caca cacc cace cack cacm caec caem caka cake cala calc cale calk call calm calt cama camb camc came camk caml camm camt cat- cata catb catc cate catm catt cbac cbal cbat cbbc cbca cbcc cbce cbcl cbcm cbct cbea cbec cbee cbet cbka cbkl cbkm cblb cblc cbme cbta cbtc cbtl ccaa ccab ccac ccam ccat ccba ccbc ccca cccb cccc cccl cccm ccee ccel cckm ccla cclc cclm ccma ccmb ccmc ccmm cctb cctc cctl cctt ceac ceal ceat ceba cec- ceca cece cecm cect ceeb ceec ceel ceem ceke cel- cela celc cele cell celt cema cemb ceme cemm cet- ceta cete ckac ckat ckbc ckbe ckck ckcl ckcm ckem cklm ckml cktb clab clam clat clea clec clee clek clem clet cltb cltc cmaa cmac cmba cmbc cmcc cmea cmec cmla cmll cmmb cmmc cmml cmta cmtc ctab ctae ctal ctba ctca ctec ctle ctma ctta e-cl e-la eaba eaca