-al a-a a-b a-c aaa aab aac aae aag aak aal aas ab- aba abb abc abe abg abk abl abs ac- aca acb acc ace acg ack acl acs aea aeb aec aee aeg aek ael aes ag- aga agb agc age agg agk agl ags aka akb akc ake akg akk akl aks al- ala alb alc ale alg alk all als as- asa asb asc ase asg ask asl ass baa bab bac bae bag bak bal bas bba bbb bbc bbe bbg bbk bbl bbs bca bcb bcc bce bcg bck bcl bcs be- bea beb bec bee beg bek bel bes bga bgb bgc bge bgg bgk bgl bgs bka bkb bkc bke bkg bkk bkl bks bla blb blc ble blg blk bll bls bsa bsb bsc bse bsg bsk bsl bss c-- caa cab cac cae cag cak cal cas cba cbb cbc cbe cbg cbk cbl cbs cca ccb ccc cce ccg cck ccl ccs ce- cea ceb cec cee ceg cek cel ces cga cgb cgc cge cgg cgl cgs cka ckb ckc cks cl- cla clb clc cle clg clk cll cls csa csb csc cse csg csk csl css eaa eab eac eae eag eak eal eas eba ebb ebc ebe ebg ebk ebl ebs ec- eca ecb ecc ece ecg eck ecl ecs eea eeb eec eee eeg eek eel ees ega egb egc ege egg egl egs eka ekb ekc eke ekg ekl eks ela elb elc ele elg elk ell els es- esa esb esc ese esg esk esl ess gaa gab gac gae gag gak gal gas gba gbc gbe gbg gbk gbl gbs gca gcb gcc gce gcg gck gcl gcs ge- gea geb gec gee geg gek gel ges gga ggb ggc ggg ggs gka gkb gks gla glb glc gle glg glk gll gls gsa gsb gsc gse gsg gsk gsl gss ka- kaa kab kac kae kag kak kal kas kba kbb kbc kbe kbk kbl kbs kca kcb kcc kce kcg kck kcl kcs ke- kea keb kec kee keg kek kel kes kga kgb kgc kgl kgs kkb kkc kke kkk kkl kks kl- kla klb klc klg kls ksa ksb ksc kse ksg ksk ksl kss la- laa lab lac lae lag lak lal las lba lbb lbc lbe lbg lbk lbl lbs lca lcb lcc lce lcg lck lcl lcs lea leb lec lee leg lek lel les lga lgb lgc lge lgg lgk lgl lgs lka lkb lkg lkl lks lla llb llc lle llg llk lll lls lsa lsb lsc lse lsg lsk lsl lss saa sab sac sae sag sak sal sas sba sbb sbc sbe sbg sbk sbl sbs sca scb scc sce scg sck scl scs se- sea seb sec see seg sek sel ses sga sgb sgc sge sgg sgk sgl sgs sk- ska skb skc ske skg skk skl sks sla slb slc sle slg slk sll sls ss- ssa ssb ssc sse ssg ssk ssl sss

-ase a-ak a-be aaaa aaab aaac aaae aaal aaas aaba aabb aabc aabl aaca aacb aacc aace aack aacl aacs aaea aaec aaes aage aaka aake aala aalc aale aall aals aasa aasc aase aass abaa abab abac abae abag abak abal abas abb- abba abbb abbe abbs abca abcb abcc abcl abcs abec abee abel abes abgl abla able abls abs- absa abse absl abss acaa acab acac acae acag acas acba acbl acca accc acce accs ace- acea acec acek acel aces acga acgs acke acks acla aclc acle acls acsa acsc acse acsl acss aeac aeas aebs aecb aecl aega aeka aela aelc aesc aess agac agag agal agas agba agca agcc agce agea agee agel ages agga agge agla aglc agle agls agsa agsg akaa akae akal akas akca akee akeg akel akes akka akle aksa alaa alac alae alag alak alal alas alb- alba albc albe albs alca alcc alce alcs alea alec alee aleg alek ales alg- alga alge algs alk- alka alkb alke all- alla alle alll alls alsa alsc alse asaa asab asac asae asag asak asal asas asba asc- asca ascb ascc asce ascl asea asec asee asek asel ases asge aska aske asks asla asle assa assc asse assk assl asss baaa baak baal baas baba babb babe babs bac- baca bacc bace back bacs baek bael baes baga bage bagg bags bak- baka bake bakl baks bala balc bale balk ball bals basa basc base bask bass bbas bbbb bbbs bbeb bbga bblb bbls bcaa bcas bcbc bcbg bcbs bcca bccc bccl bccs bcec bces bcgs bcsa bcsc bcsl bcss beag beak beal beas beba bebb bebe beca beck becs beeb beeg beek beel bees bega begg begs beka beke beks bela bele belg belk bell bels bes- besa bese besk bess bgca bggs blaa blab blac blae blag blak blas blea bleb blee bleg blek bles blkb blls blss bsaa bsac bsas bscs bsea bseb bsec bsee bseg bses bsgs bslc bssc bsse caaa caab caac caal caas caba cabe cabg cabs cac- caca cacc cace cack caec caes caga cage cagg cags caka cake cala calc cale calk call cals casa casb casc case cask casl cass cbac cbal cbbc cbbs cbca cbcc cbce cbcl cbcs cbea cbec cbee cbga cbgb cbka cbkg cbkl cblb cblc cbsa cbsc cbse ccaa ccab ccac ccag ccas ccba ccbc ccca cccb cccc cccl cccs ccee ccel ccga ccgc ccgs ccla cclc cclg ccls ccsa ccsg ccsl ccss ceac ceal ceas ceba cebs cec- ceca cece cecs ceeb ceec ceel cees cege ceke cel- cela celc cele cell cels cesa cesc cese cesg cess cgac cgal cgas cgcc cgcg cgel cges cggs cgsb cgss ckac ckbc ckbe ckck ckcl ckcs ckga ckgl cklg cksa cksb cksl clab clag clas clea clec clee cleg clek cles clkg clsa clsc csaa csab csac csak csas cscb cscc csce cscl cscs csea csec csee cska csks csla