a-a a-b a-t aaa aab aag aam aar aas aat ab- aba abb abg abm abr abs abt ag- aga agb agg agm agr ags agt ama amb amg amm amr ams amt ar- ara arb arg arm arr ars art as- asa asb asg asm asr ass ast at- ata atb atg atm atr ats att baa bab bag bam bar bas bat bba bbb bbg bbm bbr bbs bbt bga bgb bgg bgm bgr bgs bgt bma bmb bmg bmm bmr bms bmt bra brb brg brm brr brs brt bsa bsb bsg bsm bsr bss bst bta btb btg btm btr bts btt gaa gab gag gam gar gas gat gba gbg gbm gbr gbs gbt gga ggb ggg ggm ggr ggs ggt gma gmb gmg gmm gmr gms gmt gra grb grg grm grr grs grt gsa gsb gsg gsm gsr gss gst gta gtb gtg gtm gtr gts gtt m-r maa mab mag mam mar mas mat mba mbb mbg mbm mbr mbs mbt mga mgb mgm mgr mgs mgt mma mmb mmg mmm mmr mms mmt mra mrb mrg mrm mrr mrs mrt msa msb msg msm msr mss mst mta mtb mtg mtm mtr mts mtt ra- raa rab rag ram rar ras rat rba rbb rbg rbm rbr rbs rbt rga rgb rgg rgr rgs rgt rma rmb rmg rmm rmr rms rmt rra rrb rrg rrm rrr rrs rrt rsa rsb rsg rsm rsr rss rst rta rtb rtg rtm rtr rts rtt saa sab sag sam sar sas sat sba sbb sbg sbm sbr sbs sbt sga sgb sgg sgm sgr sgs sgt sma smb smg smm smr sms smt sr- sra srb srg srm srr srs srt ss- ssa ssb ssg ssm ssr sss sst sta stb stg stm str sts stt taa tab tag tam tar tas tat tba tbb tbg tbm tbr tbs tbt tga tgb tgg tgm tgr tgs tgt tma tmb tmg tmm tmr tms tmt tra trb trg trm trr trs trt tsa tsb tsg tsm tsr tss tst tta ttb ttg ttm ttr tts ttt