-th a-a a-b a-c a-t aaa aab aac aad aah aao aar aas aat ab- aba abb abc abd abh abo abr abs abt ac- aca acb acc acd ach aco acr acs act ad- ada adb adc add adh ado adr ads adt aha ahb ahc ahd ahh aho ahr ahs aht aoa aob aoc aod aoh aoo aor aos aot ar- ara arb arc ard arh aro arr ars art as- asa asb asc asd ash aso asr ass ast at- ata atb atc atd ath ato atr ats att baa bab bac bad bah bao bar bas bat bba bbb bbc bbd bbh bbo bbr bbs bbt bca bcb bcc bcd bch bco bcr bcs bct bda bdb bdc bdd bdh bdo bdr bds bdt bha bhb bhc bhd bhh bho bhr bhs bht boa bob boc bod boh boo bor bos bot bra brb brd brh bro brr brs brt bsa bsb bsc bsd bsh bso bsr bss bst bta btb btc btd bth bto btr bts btt c-- caa cab cac cad cah cao car cas cat cba cbb cbc cbd cbh cbo cbr cbs cbt cca ccb ccc ccd cch cco ccr ccs cct cda cdb cdc cdd cdh cdo cdr cds cdt ch- cha chb chc chd chh cho chr chs cht co- coa cob coc cod coh coo cor cos cot cra crb crc crd crh cro crr crs crt csa csb csc csd csh cso csr css cst cta ctb ctc ctd cth cto ctr cts ctt daa dab dac dad dah dao dar das dat dba dbb dbc dbd dbh dbo dbr dbs dbt dca dcb dcc dcd dco dcr dcs dct dda ddb ddc ddd ddh ddo ddr dds ddt dh- dha dhb dhc dhd dhh dho dhr dhs dht doa dob doc dod doh doo dor dos dot dra drb drc drd dro drr drs drt dsa dsb dsc dsd dsh dso dsr dss dst dta dtb dtc dtd dth dto dtr dts dtt haa hab hac had hah hao har has hat hba hbb hbc hbd hbh hbo hbr hbs hbt hca hcb hcc hcd hch hco hcr hcs hct hda hdb hdc hdd hdh hdo hdr hds hdt hha hhb hhc hhd hhh hho hhr hhs hht hoa hob hoc hod hoh hoo hor hos hot hr- hra hrb hrc hrd hrh hro hrr hrs hrt hsa hsb hsc hsd hsh hsr hss hst hta htb htc htd hth hto htr hts htt oaa oab oac oad oah oao oar oas oat ob- oba obb obc obd obh obo obr obs obt oc- oca ocb occ ocd och oco ocr ocs oct oda odb odc odd odh odo odr ods odt oha ohc ohd ohh oho ohr ohs oht oo- ooa oob ooc ood ooh ooo oor oos oot or- ora orb orc ord orh oro orr ors ort os- osa osb osc osd osh oso osr oss ost ot- ota otb otc otd oth oto otr ots ott ra- raa rab rac rad rah rao rar ras rat rba rbb rbc rbd rbh rbo rbr rbs rbt rca rcb rcc rcd rch rco rcr rcs rct rda rdb rdc rdd rdh rdo rdr rds rdt rh- rha rhb rhc rhd rhh rho rhr rhs rht roa rob roc rod roh roo ror ros rot rra rrb rrc rrd rrh rrr rrs rrt rsa rsb rsc rsd rsh rso rsr rss rst rta rtb rtc rtd rto rtr rts rtt saa sab sac sad sah sao sar sas sat sba sbb sbc sbd sbh sbo sbr sbs sbt sca scb scc scd sch sco scr scs sct sda sdb sdc sdd sdh sdo sdr sds sdt sh- sha shb shc shd shh sho shr shs sht soa sob soc sod soh soo sor sos sot sr- sra srb src srd srh sro srr srs srt ss- ssa ssb ssc ssd ssh sso ssr sss sst sta stb stc std sth sto str sts stt taa tab tac tad tah tao tar tas tat tba tbb tbc tbd tbh tbo tbr tbs tbt tca tcb tcc tcd tch tco tcr tcs tct tda tdb tdc tdd tdh tdo tdr tds tdt th- tha thb thc thd thh tho thr ths tht to- toa tob toc tod toh too tor tos tot tra trb trc trd trh tro trr trs trt tsa tsb tsc tsd tsh tso tsr tss tst tta ttb ttc ttd tth tto ttr tts ttt