a-a a-b a-i a-t aaa aab aag aai aam aas aat ab- aba abb abg abi abm abs abt ag- aga agb agg agi agm ags agt ai- aia aib aig aii aim ais ait ama amb amg ami amm ams amt as- asa asb asg asi asm ass ast at- ata atb atg ati atm ats att baa bab bag bai bam bas bat bba bbb bbg bbi bbm bbs bbt bga bgb bgg bgi bgm bgs bgt bi- bia bib big bii bim bis bit bma bmb bmg bmi bmm bms bmt bsa bsb bsg bsi bsm bss bst bta btb btg bti btm bts btt gaa gab gag gai gam gas gat gba gbg gbi gbm gbs gbt gga ggb ggg ggi ggm ggs ggt gia gib gig gii gim gis git gma gmb gmg gmi gmm gms gmt gsa gsb gsg gsi gsm gss gst gta gtb gtg gti gtm gts gtt ia- iaa iab iag iai iam ias iat iba ibb ibg ibi ibm ibs ibt iga igb igg igi igm igs igt iia iib iii iim iis iit im- ima imb img imi imm ims imt is- isa isb isg isi ism iss ist ita itb itg iti itm its itt maa mab mag mai mam mas mat mba mbb mbg mbi mbm mbs mbt mga mgb mgi mgm mgs mgt mi- mia mib mig mii mim mis mit mma mmb mmg mmi mmm mms mmt msa msb msg msi msm mss mst mta mtb mtg mti mtm mts mtt saa sab sag sai sam sas sat sba sbb sbg sbi sbm sbs sbt sga sgb sgg sgi sgm sgs sgt sia sib sig sii sim sis sit sma smb smg smi smm sms smt ss- ssa ssb ssg ssi ssm sss sst sta stb stg sti stm sts stt taa tab tag tai tam tas tat tba tbb tbg tbi tbm tbs tbt tga tgb tgg tgi tgm tgs tgt tia tib tig tii tim tis tit tma tmb tmg tmi tmm tms tmt tsa tsb tsg tsi tsm tss tst tta ttb ttg tti ttm tts ttt