-th a-a a-b a-t aaa aab aae aag aah aas aat ab- aba abb abe abg abh abs abt aea aeb aee aeg aeh aes aet ag- aga agb age agg agh ags agt aha ahb ahe ahg ahh ahs aht as- asa asb ase asg ash ass ast at- ata atb ate atg ath ats att baa bab bae bag bah bas bat bba bbb bbe bbg bbh bbs bbt be- bea beb bee beg beh bes bet bga bgb bge bgg bgh bgs bgt bha bhb bhe bhg bhh bhs bht bsa bsb bse bsg bsh bss bst bta btb bte btg bth bts btt eaa eab eae eag eah eas eat eba ebb ebe ebg ebh ebs ebt eea eeb eee eeg ees eet ega egb ege egg egh egs egt eha ehb ehe ehg ehh ehs eht es- esa esb ese esg esh ess est eta etb ete etg eth ets ett gaa gab gae gag gah gas gat gba gbe gbg gbh gbs gbt ge- gea geb gee geg geh ges get gga ggb ggg ggh ggs ggt gha ghb ghe ghg ghh ghs ght gsa gsb gse gsg gss gst gta gtb gte gtg gth gts gtt haa hab hae hag hah has hat hba hbb hbe hbg hbh hbs hbt he- hea heb hee heg heh hes het hga hgb hge hgg hgh hgs hgt hha hhb hhe hhg hhh hhs hht hsa hsb hse hsg hsh hss hst hta htb hte htg hth hts htt saa sab sae sag sah sas sat sba sbb sbe sbg sbh sbs sbt se- sea seb see seg seh ses set sga sgb sge sgg sgh sgs sgt sh- sha shb she shg shh shs sht ss- ssa ssb sse ssg ssh sss sst sta stb ste stg sth sts stt taa tab tae tag tah tas tat tba tbb tbe tbg tbh tbs tbt te- tea teb tee teg teh tes tet tga tgb tge tgg tgh tgs tgt th- tha thb the thg thh ths tht tsa tsb tse tsg tsh tss tst tta ttb tte ttg tth tts ttt