-al a-a a-b a-t aaa aab aag aal aar aas aat ab- aba abb abg abl abr abs abt ag- aga agb agg agl agr ags agt al- ala alb alg all alr als alt ar- ara arb arg arl arr ars art as- asa asb asg asl asr ass ast at- ata atb atg atl atr ats att baa bab bag bal bar bas bat bba bbb bbg bbl bbr bbs bbt bga bgb bgg bgl bgr bgs bgt bla blb blg bll blr bls blt bra brb brg brl brr brs brt bsa bsb bsg bsl bsr bss bst bta btb btg btl btr bts btt gaa gab gag gal gar gas gat gba gbg gbl gbr gbs gbt gga ggb ggg ggr ggs ggt gla glb glg gll glr gls glt gra grb grg grl grr grs grt gsa gsb gsg gsl gsr gss gst gta gtb gtg gtl gtr gts gtt la- laa lab lag lal lar las lat lba lbb lbg lbl lbr lbs lbt lga lgb lgg lgl lgr lgs lgt lla llb llg lll llr lls llt lra lrb lrg lrr lrs lrt lsa lsb lsg lsl lsr lss lst lta ltb ltg ltl ltr lts ltt ra- raa rab rag ral rar ras rat rba rbb rbg rbl rbr rbs rbt rga rgb rgg rgr rgs rgt rla rlg rll rlr rls rlt rra rrb rrg rrl rrr rrs rrt rsa rsb rsg rsl rsr rss rst rta rtb rtg rtl rtr rts rtt saa sab sag sal sar sas sat sba sbb sbg sbl sbr sbs sbt sga sgb sgg sgl sgr sgs sgt sla slb slg sll slr sls slt sr- sra srb srg srl srr srs srt ss- ssa ssb ssg ssl ssr sss sst sta stb stg stl str sts stt taa tab tag tal tar tas tat tba tbb tbg tbl tbr tbs tbt tga tgb tgg tgl tgr tgs tgt tla tlg tll tlr tls tlt tra trb trg trl trr trs trt tsa tsb tsg tsl tsr tss tst tta ttb ttg ttl ttr tts ttt