-th a-a a-b a-i a-t aaa aab aaf aag aah aai aas aat ab- aba abb abf abg abh abi abs abt af- afa afb aff afg afh afi afs aft ag- aga agb agf agg agh agi ags agt aha ahb ahf ahg ahh ahi ahs aht ai- aia aib aif aig aih aii ais ait as- asa asb asf asg ash asi ass ast at- ata atb atf atg ath ati ats att baa bab baf bag bah bai bas bat bba bbb bbf bbg bbh bbi bbs bbt bfa bfb bff bfg bfh bfi bfs bft bga bgb bgf bgg bgh bgi bgs bgt bha bhb bhf bhg bhh bhi bhs bht bi- bia bib bif big bih bii bis bit bsa bsb bsf bsg bsh bsi bss bst bta btb btf btg bth bti bts btt faa fab faf fag fah fai fas fat fba fbb fbf fbg fbh fbi fbs fbt ffa fff ffg ffh ffi ffs fft fga fgb fgf fgg fgh fgi fgs fgt fha fhb fhf fhg fhh fhi fhs fia fib fif fig fih fii fis fit fsa fsb fsf fsg fsh fsi fss fst fta ftb ftf ftg fth fti fts ftt gaa gab gaf gag gah gai gas gat gba gbf gbg gbh gbi gbs gbt gfa gfb gff gfh gfi gfs gft gga ggb ggg ggh ggi ggs ggt gha ghb ghg ghh ghi ghs ght gia gib gif gig gih gii gis git gsa gsb gsf gsg gsi gss gst gta gtb gtf gtg gth gti gts gtt h-i haa hab haf hag hah hai has hat hba hbb hbf hbg hbh hbi hbs hbt hfa hfb hff hfg hfh hfi hfs hft hga hgb hgf hgg hgh hgi hgs hgt hha hhb hhf hhg hhh hhi hhs hht hia hib hif hig hih hii his hit hsa hsb hsf hsg hsh hsi hss hst hta htb htf htg hth hti hts htt i-f ia- iaa iab iaf iag iah iai ias iat iba ibb ibf ibg ibh ibi ibs ibt ifa ifb iff ifg ifi ifs ift iga igb igf igg igh igi igs igt iha ihb ihf ihg ihh ihi ihs iht iia iib iif iih iii iis iit is- isa isb isf isg ish isi iss ist ita itb itf itg ith iti its itt saa sab saf sag sah sai sas sat sba sbb sbf sbg sbh sbi sbs sbt sfa sfb sff sfg sfh sfi sfs sft sga sgb sgf sgg sgh sgi sgs sgt sh- sha shb shf shg shh shi shs sht sia sib sif sig sih sii sis sit ss- ssa ssb ssf ssg ssh ssi sss sst sta stb stf stg sth sti sts stt taa tab taf tag tah tai tas tat tba tbb tbf tbg tbh tbi tbs tbt tfa tfb tff tfg tfh tfi tfs tft tga tgb tgf tgg tgh tgi tgs tgt th- tha thb thf thg thh thi ths tht tia tib tif tig tih tii tis tit tsa tsb tsf tsg tsh tsi tss tst tta ttb ttf ttg tth tti tts ttt