-th a-a a-b a-t aaa aab aad aah aar aas aat ab- aba abb abd abh abr abs abt ad- ada adb add adh adr ads adt aha ahb ahd ahh ahr ahs aht ar- ara arb ard arh arr ars art as- asa asb asd ash asr ass ast at- ata atb atd ath atr ats att baa bab bad bah bar bas bat bba bbb bbd bbh bbr bbs bbt bda bdb bdd bdh bdr bds bdt bha bhb bhd bhh bhr bhs bht bra brb brd brh brr brs brt bsa bsb bsd bsh bsr bss bst bta btb btd bth btr bts btt daa dab dad dah dar das dat dba dbb dbd dbh dbr dbs dbt dda ddb ddd ddh ddr dds ddt dh- dha dhb dhd dhh dhr dhs dht dra drb drd drr drs drt dsa dsb dsd dsh dsr dss dst dta dtb dtd dth dtr dts dtt haa hab had hah har has hat hba hbb hbd hbh hbr hbs hbt hda hdb hdd hdh hdr hds hdt hha hhb hhd hhh hhr hhs hht hr- hra hrb hrd hrh hrr hrs hrt hsa hsb hsd hsh hsr hss hst hta htb htd hth htr hts htt ra- raa rab rad rah rar ras rat rba rbb rbd rbh rbr rbs rbt rda rdb rdd rdh rdr rds rdt rh- rha rhb rhd rhh rhr rhs rht rra rrb rrd rrh rrr rrs rrt rsa rsb rsd rsh rsr rss rst rta rtb rtd rtr rts rtt saa sab sad sah sar sas sat sba sbb sbd sbh sbr sbs sbt sda sdb sdd sdh sdr sds sdt sh- sha shb shd shh shr shs sht sr- sra srb srd srh srr srs srt ss- ssa ssb ssd ssh ssr sss sst sta stb std sth str sts stt taa tab tad tah tar tas tat tba tbb tbd tbh tbr tbs tbt tda tdb tdd tdh tdr tds tdt th- tha thb thd thh thr ths tht tra trb trd trh trr trs trt tsa tsb tsd tsh tsr tss tst tta ttb ttd tth ttr tts ttt