-al -er a-a a-b a-t aaa aab aae aag aal aar aas aat ab- aba abb abe abg abl abr abs abt aea aeb aee aeg ael aer aes aet ag- aga agb age agg agl agr ags agt al- ala alb ale alg all alr als alt ar- ara arb are arg arl arr ars art as- asa asb ase asg asl asr ass ast at- ata atb ate atg atl atr ats att baa bab bae bag bal bar bas bat bba bbb bbe bbg bbl bbr bbs bbt be- bea beb bee beg bel ber bes bet bga bgb bge bgg bgl bgr bgs bgt bla blb ble blg bll blr bls blt bra brb bre brg brl brr brs brt bsa bsb bse bsg bsl bsr bss bst bta btb bte btg btl btr bts btt eaa eab eae eag eal ear eas eat eba ebb ebe ebg ebl ebr ebs ebt eea eeb eee eeg eel eer ees eet ega egb ege egg egl egr egs egt ela elb ele elg ell elr els elt era erb ere erg erl err ers ert es- esa esb ese esg esl esr ess est eta etb ete etg etl etr ets ett gaa gab gae gag gal gar gas gat gba gbe gbg gbl gbr gbs gbt ge- gea geb gee geg gel ger ges get gga ggb ggg ggr ggs ggt gla glb gle glg gll glr gls glt gra grb gre grg grl grr grs grt gsa gsb gse gsg gsl gsr gss gst gta gtb gte gtg gtl gtr gts gtt la- laa lab lae lag lal lar las lat lba lbb lbe lbg lbl lbr lbs lbt lea leb lee leg lel ler les let lga lgb lge lgg lgl lgr lgs lgt lla llb lle llg lll llr lls llt lra lrb lrg lrr lrs lrt lsa lsb lse lsg lsl lsr lss lst lta ltb lte ltg ltl ltr lts ltt ra- raa rab rae rag ral rar ras rat rba rbb rbe rbg rbl rbr rbs rbt re- rea reb ree reg rel rer res ret rga rgb rge rgg rgr rgs rgt rla rle rlg rll rlr rls rlt rra rrb rrg rrl rrr rrs rrt rsa rsb rse rsg rsl rsr rss rst rta rtb rte rtg rtl rtr rts rtt saa sab sae sag sal sar sas sat sba sbb sbe sbg sbl sbr sbs sbt se- sea seb see seg sel ser ses set sga sgb sge sgg sgl sgr sgs sgt sla slb sle slg sll slr sls slt sr- sra srb sre srg srl srr srs srt ss- ssa ssb sse ssg ssl ssr sss sst sta stb ste stg stl str sts stt taa tab tae tag tal tar tas tat tba tbb tbe tbg tbl tbr tbs tbt te- tea teb tee teg tel ter tes tet tga tgb tge tgg tgl tgr tgs tgt tla tle tlg tll tlr tls tlt tra trb tre trg trl trr trs trt tsa tsb tse tsg tsl tsr tss tst tta ttb tte ttg ttl ttr tts ttt