-th a-a a-b a-t aaa aab aad aah aan aas aat ab- aba abb abd abh abn abs abt ad- ada adb add adh adn ads adt aha ahb ahd ahh ahn ahs aht an- ana anb and anh ann ans ant as- asa asb asd ash asn ass ast at- ata atb atd ath atn ats att baa bab bad bah ban bas bat bba bbb bbd bbh bbn bbs bbt bda bdb bdd bdh bds bdt bha bhb bhd bhh bhs bht bna bnb bnd bnn bns bnt bsa bsb bsd bsh bsn bss bst bta btb btd bth btn bts btt daa dab dad dah dan das dat dba dbb dbd dbh dbn dbs dbt dda ddb ddd ddh ddn dds ddt dh- dha dhb dhd dhh dhs dht dna dnb dnd dnh dnn dns dnt dsa dsb dsd dsh dsn dss dst dta dtb dtd dth dtn dts dtt haa hab had hah han has hat hba hbb hbd hbh hbn hbs hbt hda hdb hdd hdh hdn hds hdt hha hhb hhd hhh hhn hhs hht hna hnb hnd hnh hnn hns hnt hsa hsb hsd hsh hsn hss hst hta htb htd hth htn hts htt naa nab nad nah nan nas nat nba nbb nbd nbn nbs nbt nda ndb ndd ndh ndn nds ndt nha nhb nhd nhh nhn nhs nht nna nnb nnh nnn nns nnt nsa nsb nsd nsh nsn nss nst nta ntb ntd nth ntn nts ntt saa sab sad sah san sas sat sba sbb sbd sbh sbn sbs sbt sda sdb sdd sdh sdn sds sdt sh- sha shb shd shh shn shs sht sna snb snd snn sns snt ss- ssa ssb ssd ssh ssn sss sst sta stb std sth stn sts stt taa tab tad tah tan tas tat tba tbb tbd tbh tbn tbs tbt tda tdb tdd tdh tdn tds tdt th- tha thb thd thh thn ths tht tna tnb tnd tnh tnn tns tnt tsa tsb tsd tsh tsn tss tst tta ttb ttd tth ttn tts ttt