a-a a-b a-i a-q a-t aaa aab aai aan aaq aas aat ab- aba abb abi abn abq abs abt ai- aia aib aii ain aiq ais ait an- ana anb ani ann anq ans ant aqa aqi aqn aqs aqt as- asa asb asi asn asq ass ast at- ata atb ati atn ats att baa bab bai ban baq bas bat bba bbb bbi bbn bbq bbs bbt bi- bia bib bii bin bis bit bna bnb bni bnn bns bnt bqt bsa bsb bsi bsn bss bst bta btb bti btn btq bts btt ia- iaa iab iai ian iaq ias iat iba ibb ibi ibn ibs ibt iia iib iii iin iis iit in- ina inb ini inn inq ins int iqa iqs iqt is- isa isb isi isn isq iss ist ita itb iti itn itq its itt n-i naa nab nai nan nas nat nba nbb nbi nbn nbs nbt nia nib nii nin niq nis nit nna nnb nni nnn nns nnt nqs nqt nsa nsb nsi nsn nss nst nta ntb nti ntn ntq nts ntt qaa qan qas qat qba qbq qbs qin qis qit qnb qni qns qqq qsa qsi qst qta qti qtq qts saa sab sai san saq sas sat sba sbb sbi sbn sbq sbs sbt sia sib sii sin siq sis sit sna snb sni snn sns snt sqa sqi sqn sqq sqs ss- ssa ssb ssi ssn ssq sss sst sta stb sti stn stq sts stt taa tab tai tan taq tas tat tba tbb tbi tbn tbs tbt tia tib tii tin tis tit tna tnb tni tnn tnq tns tnt tsa tsb tsi tsn tsq tss tst tta ttb tti ttn tts ttt