a-a a-b a-i a-t aaa aab aad aai aan aas aat ab- aba abb abd abi abn abs abt ad- ada adb add adi adn ads adt ai- aia aib aid aii ain ais ait an- ana anb and ani ann ans ant as- asa asb asd asi asn ass ast at- ata atb atd ati atn ats att baa bab bad bai ban bas bat bba bbb bbd bbi bbn bbs bbt bda bdb bdd bdi bds bdt bi- bia bib bid bii bin bis bit bna bnb bnd bni bnn bns bnt bsa bsb bsd bsi bsn bss bst bta btb btd bti btn bts btt daa dab dad dai dan das dat dba dbb dbd dbi dbn dbs dbt dda ddb ddd ddi ddn dds ddt di- dia dib did dii din dis dit dna dnb dnd dni dnn dns dnt dsa dsb dsd dsi dsn dss dst dta dtb dtd dti dtn dts dtt i-d ia- iaa iab iad iai ian ias iat iba ibb ibd ibi ibn ibs ibt ida idb idd idi idn ids idt iia iib iid iii iin iis iit in- ina inb ind ini inn ins int is- isa isb isd isi isn iss ist ita itb itd iti itn its itt n-i naa nab nad nai nan nas nat nba nbb nbd nbi nbn nbs nbt nda ndb ndd ndi ndn nds ndt nia nib nid nii nin nis nit nna nnb nni nnn nns nnt nsa nsb nsd nsi nsn nss nst nta ntb ntd nti ntn nts ntt saa sab sad sai san sas sat sba sbb sbd sbi sbn sbs sbt sda sdb sdd sdi sdn sds sdt sia sib sid sii sin sis sit sna snb snd sni snn sns snt ss- ssa ssb ssd ssi ssn sss sst sta stb std sti stn sts stt taa tab tad tai tan tas tat tba tbb tbd tbi tbn tbs tbt tda tdb tdd tdi tdn tds tdt tia tib tid tii tin tis tit tna tnb tnd tni tnn tns tnt tsa tsb tsd tsi tsn tss tst tta ttb ttd tti ttn tts ttt