-th a-a a-t aaa aaf aag aah aas aat af- afa aff afg afh afs aft ag- aga agf agg agh ags agt aha ahf ahg ahh ahs aht as- asa asf asg ash ass ast at- ata atf atg ath ats att faa faf fag fah fas fat ffa fff ffg ffh ffs fft fga fgf fgg fgh fgs fgt fha fhf fhg fhh fhs fsa fsf fsg fsh fss fst fta ftf ftg fth fts ftt gaa gaf gag gah gas gat gfa gff gfh gfs gft gga ggg ggh ggs ggt gha ghg ghh ghs ght gsa gsf gsg gss gst gta gtf gtg gth gts gtt haa haf hag hah has hat hfa hff hfg hfh hfs hft hga hgf hgg hgh hgs hgt hha hhf hhg hhh hhs hht hsa hsf hsg hsh hss hst hta htf htg hth hts htt saa saf sag sah sas sat sfa sff sfg sfh sfs sft sga sgf sgg sgh sgs sgt sh- sha shf shg shh shs sht ss- ssa ssf ssg ssh sss sst sta stf stg sth sts stt taa taf tag tah tas tat tfa tff tfg tfh tfs tft tga tgf tgg tgh tgs tgt th- tha thf thg thh ths tht tsa tsf tsg tsh tss tst tta ttf ttg tth tts ttt