-al a-a a-b a-t aaa aab aae aag aak aal aas aat ab- aba abb abe abg abk abl abs abt aea aeb aee aeg aek ael aes aet ag- aga agb age agg agk agl ags agt aka akb ake akg akk akl aks al- ala alb ale alg alk all als alt as- asa asb ase asg ask asl ass ast at- ata atb ate atg atl ats att baa bab bae bag bak bal bas bat bba bbb bbe bbg bbk bbl bbs bbt be- bea beb bee beg bek bel bes bet bga bgb bge bgg bgk bgl bgs bgt bka bkb bke bkg bkk bkl bks bkt bla blb ble blg blk bll bls blt bsa bsb bse bsg bsk bsl bss bst bta btb bte btg btk btl bts btt eaa eab eae eag eak eal eas eat eba ebb ebe ebg ebk ebl ebs ebt eea eeb eee eeg eek eel ees eet ega egb ege egg egl egs egt eka ekb eke ekg ekl eks ekt ela elb ele elg elk ell els elt es- esa esb ese esg esk esl ess est eta etb ete etg etk etl ets ett gaa gab gae gag gak gal gas gat gba gbe gbg gbk gbl gbs gbt ge- gea geb gee geg gek gel ges get gga ggb ggg ggs ggt gka gkb gks gkt gla glb gle glg glk gll gls glt gsa gsb gse gsg gsk gsl gss gst gta gtb gte gtg gtk gtl gts gtt k-t ka- kaa kab kae kag kak kal kas kat kba kbb kbe kbk kbl kbs ke- kea keb kee keg kek kel kes ket kga kgb kgl kgs kkb kke kkk kkl kks kkt kl- kla klb klg kls klt ksa ksb kse ksg ksk ksl kss kst kta ktb kte ktg ktk ktl kts ktt la- laa lab lae lag lak lal las lat lba lbb lbe lbg lbk lbl lbs lbt lea leb lee leg lek lel les let lga lgb lge lgg lgk lgl lgs lgt lka lkb lkg lkl lks lkt lla llb lle llg llk lll lls llt lsa lsb lse lsg lsk lsl lss lst lta ltb lte ltg ltk ltl lts ltt saa sab sae sag sak sal sas sat sba sbb sbe sbg sbk sbl sbs sbt se- sea seb see seg sek sel ses set sga sgb sge sgg sgk sgl sgs sgt sk- ska skb ske skg skk skl sks skt sla slb sle slg slk sll sls slt ss- ssa ssb sse ssg ssk ssl sss sst sta stb ste stg stk stl sts stt taa tab tae tag tak tal tas tat tba tbb tbe tbg tbk tbl tbs tbt te- tea teb tee teg tek tel tes tet tga tgb tge tgg tgk tgl tgs tgt tka tkb tke tkg tkk tkl tks tkt tla tle tlg tlk tll tls tlt tsa tsb tse tsg tsk tsl tss tst tta ttb tte ttg ttk ttl tts ttt