-al a-a a-b a-c aaa aab aac aae aag aak aal aam ab- aba abb abc abe abg abk abl abm ac- aca acb acc ace acg ack acl acm aea aeb aec aee aeg aek ael aem ag- aga agb agc age agg agk agl agm aka akb akc ake akg akk akl akm al- ala alb alc ale alg alk all alm ama amb amc ame amg amk aml amm baa bab bac bae bag bak bal bam bba bbb bbc bbe bbg bbk bbl bbm bca bcb bcc bce bcg bck bcl bcm be- bea beb bec bee beg bek bel bem bga bgb bgc bge bgg bgk bgl bgm bka bkb bkc bke bkg bkk bkl bkm bla blb blc ble blg blk bll blm bma bmb bmc bme bmg bmk bml bmm c-- caa cab cac cae cag cak cal cam cba cbb cbc cbe cbg cbk cbl cbm cca ccb ccc cce ccg cck ccl ccm ce- cea ceb cec cee ceg cek cel cem cga cgb cgc cge cgg cgl cgm cka ckb ckc ckm cl- cla clb clc cle clg clk cll clm cma cmb cmc cme cmg cmk cml cmm eaa eab eac eae eag eak eal eam eba ebb ebc ebe ebg ebk ebl ebm ec- eca ecb ecc ece ecg eck ecl ecm eea eeb eec eee eeg eek eel eem ega egb egc ege egg egl egm eka ekb ekc eke ekg ekl ela elb elc ele elg elk ell elm em- ema emb emc eme emg emk eml emm gaa gab gac gae gag gak gal gam gba gbc gbe gbg gbk gbl gbm gca gcb gcc gce gcg gck gcl gcm ge- gea geb gec gee geg gek gel gem gga ggb ggc ggg ggm gka gkb gkm gla glb glc gle glg glk gll glm gma gmb gmc gme gmg gml gmm ka- kaa kab kac kae kag kak kal kam kba kbb kbc kbe kbk kbl kbm kca kcb kcc kce kcg kck kcl kcm ke- kea keb kec kee keg kek kel kem kga kgb kgc kgl kgm kkb kkc kke kkk kkl kkm kl- kla klb klc klg klm kma kmb kmc kme kmg kmk kml kmm la- laa lab lac lae lag lak lal lam lba lbb lbc lbe lbg lbk lbl lbm lca lcb lcc lce lcg lck lcl lcm lea leb lec lee leg lek lel lem lga lgb lgc lge lgg lgk lgl lgm lka lkb lkg lkl lla llb llc lle llg llk lll llm lma lmb lmc lme lmg lmk lml lmm maa mab mac mae mag mak mal mam mba mbb mbc mbe mbg mbk mbl mbm mc- mca mcb mcc mce mcg mck mcl mcm mea meb mec mee meg mek mel mem mga mgb mgc mge mgk mgl mgm mka mkb mkc mke mkg mkk mkl mkm mla mlb mlc mle mlg mlk mll mlm mma mmb mmc mme mmg mmk mml mmm

a-ak a-be aaaa aaab aaac aaae aaal aaam aaba aabb aabc aabl aabm aaca aacb aacc aace aack aacl aacm aaea aaec aaem aage aaka aake aala aalc aale aall aama aamb aamc aame abaa abab abac abae abag abak abal abam abb- abba abbb abbe abca abcb abcc abcl abec abee abel abgl abla able abma abmb abmc acaa acab acac acae acag acba acbl acca accc acce accm ace- acea acec acek acel acem acga acke acla aclc acle acma acmc acme acmg aeac aecb aecl aega aeka aela aelc agac agag agal agam agba agca agcc agce agea agee agel agem agga agge agla aglc agle agma agmc agme akaa akae akal akam akca akee akeg akel akka akle alaa alac alae alag alak alal alam alb- alba albc albe albm alca alcc alce alea alec alee aleg alek alem alg- alga alge alk- alka alkb alke all- alla alle alll alma almc alme amaa amac amae amag amal amam amb- amba ambe amca amcc amec amee amel amga amka amla amm- amma amme baaa baak baal baam baba babb babe babm bac- baca bacc bace back baek bael baga bage bagg bak- baka bake bakl bala balc bale balk ball balm bama bamb bamc bame baml bamm bbbb bbcm bbeb bbga bbgm bblb bbmg bcaa bcam bcbc bcbg bcca bccc bccl bccm bcec bcma beag beak beal beam beba bebb bebe beca beck beeb beeg beek beel beem bega begg beka beke bela bele belg belk bell belm bema beme bgca blaa blab blac blae blag blak blam blea bleb blee bleg blek blem blkb blme bmaa bmag bmce caaa caab caac caal caam caba cabe cabg cac- caca cacc cace cack cacm caec caem caga cage cagg caka cake cala calc cale calk call calm cama camb camc came camk caml camm cbac cbal cbbc cbca cbcc cbce cbcl cbcm cbea cbec cbee cbga cbgb cbka cbkg cbkl cbkm cblb cblc cbme ccaa ccab ccac ccag ccam ccba ccbc ccca cccb cccc cccl cccm ccee ccel ccga ccgc cckm ccla cclc cclg cclm ccma ccmb ccmc ccmm ceac ceal ceba cec- ceca cece cecm ceeb ceec ceel ceem cege ceke cel- cela celc cele cell cema cemb ceme cemm cgac cgal cgcc cgcg cgel cgmc ckac ckbc ckbe ckck ckcl ckcm ckem ckga ckgl ckgm cklg cklm ckml clab clag clam clea clec clee cleg clek clem clkg clmg cmaa cmac cmba cmbc cmcc cmea cmec cmla cmll cmmb cmmc cmml e-cl e-la eaba eaca eacc eaec eaga eage eagl eala ealc eale eama eame ebac ebal ebam ebba ebbc ebcc ebel ebla ecaa ecac ecal ecam ecbc ecbe ecca eccb eccc ecce eccl eccm ecem ecka ecla ecma eeca eeea eeee eega eeka eeke eele egaa egae egal egba egbe egcc egcg egea egec egee egel egem eggb egge eglc egle egma egml eka- ekab ekam ekeb ekek ekka ekma el-b elab elac elal elam elba elbe elca elcb elce elea elec elee elek