-th a-a a-b a-i a-t aaa aab aah aai aan aas aat ab- aba abb abh abi abn abs abt aha ahb ahh ahi ahn ahs aht ai- aia aib aih aii ain ais ait an- ana anb anh ani ann ans ant as- asa asb ash asi asn ass ast at- ata atb ath ati atn ats att baa bab bah bai ban bas bat bba bbb bbh bbi bbn bbs bbt bha bhb bhh bhi bhs bht bi- bia bib bih bii bin bis bit bna bnb bni bnn bns bnt bsa bsb bsh bsi bsn bss bst bta btb bth bti btn bts btt h-i haa hab hah hai han has hat hba hbb hbh hbi hbn hbs hbt hha hhb hhh hhi hhn hhs hht hia hib hih hii hin his hit hna hnb hnh hnn hns hnt hsa hsb hsh hsi hsn hss hst hta htb hth hti htn hts htt ia- iaa iab iah iai ian ias iat iba ibb ibh ibi ibn ibs ibt iha ihb ihh ihi ihn ihs iht iia iib iih iii iin iis iit in- ina inb inh ini inn ins int is- isa isb ish isi isn iss ist ita itb ith iti itn its itt n-i naa nab nah nai nan nas nat nba nbb nbi nbn nbs nbt nha nhb nhh nhi nhn nhs nht nia nib nih nii nin nis nit nna nnb nnh nni nnn nns nnt nsa nsb nsh nsi nsn nss nst nta ntb nth nti ntn nts ntt saa sab sah sai san sas sat sba sbb sbh sbi sbn sbs sbt sh- sha shb shh shi shn shs sht sia sib sih sii sin sis sit sna snb sni snn sns snt ss- ssa ssb ssh ssi ssn sss sst sta stb sth sti stn sts stt taa tab tah tai tan tas tat tba tbb tbh tbi tbn tbs tbt th- tha thb thh thi thn ths tht tia tib tih tii tin tis tit tna tnb tnh tni tnn tns tnt tsa tsb tsh tsi tsn tss tst tta ttb tth tti ttn tts ttt