-th a-a a-b a-c a-t aaa aab aac aah aam aao aar aas aat ab- aba abb abc abh abm abo abr abs abt ac- aca acb acc ach acm aco acr acs act aha ahb ahc ahh ahm aho ahr ahs aht ama amb amc amh amm amo amr ams amt aoa aob aoc aoh aom aoo aor aos aot ar- ara arb arc arh arm aro arr ars art as- asa asb asc ash asm aso asr ass ast at- ata atb atc ath atm ato atr ats att baa bab bac bah bam bao bar bas bat bba bbb bbc bbh bbm bbo bbr bbs bbt bca bcb bcc bch bcm bco bcr bcs bct bha bhb bhc bhh bhm bho bhr bhs bht bma bmb bmc bmh bmm bmo bmr bms bmt boa bob boc boh bom boo bor bos bot bra brb brh brm bro brr brs brt bsa bsb bsc bsh bsm bso bsr bss bst bta btb btc bth btm bto btr bts btt c-- caa cab cac cah cam cao car cas cat cba cbb cbc cbh cbm cbo cbr cbs cbt cca ccb ccc cch ccm cco ccr ccs cct ch- cha chb chc chh chm cho chr chs cht cma cmb cmc cmh cmm cmo cmr cms cmt co- coa cob coc coh com coo cor cos cot cra crb crc crh crm cro crr crs crt csa csb csc csh csm cso csr css cst cta ctb ctc cth ctm cto ctr cts ctt haa hab hac hah ham hao har has hat hba hbb hbc hbh hbm hbo hbr hbs hbt hca hcb hcc hch hcm hco hcr hcs hct hha hhb hhc hhh hhm hho hhr hhs hht hma hmb hmc hmh hmm hmo hmr hms hmt hoa hob hoc hoh hom hoo hor hos hot hr- hra hrb hrc hrh hrm hro hrr hrs hrt hsa hsb hsc hsh hsm hsr hss hst hta htb htc hth htm hto htr hts htt m-o m-r maa mab mac mah mam mao mar mas mat mba mbb mbc mbh mbm mbo mbr mbs mbt mc- mca mcb mcc mch mcm mco mcr mcs mct mha mhc mhh mhm mho mhr mhs mht mma mmb mmc mmh mmm mmo mmr mms mmt moa mob moc moh mom moo mor mos mot mra mrb mrc mrh mrm mro mrr mrs mrt msa msb msc msh msm mso msr mss mst mta mtb mtc mth mtm mto mtr mts mtt oaa oab oac oah oam oao oar oas oat ob- oba obb obc obh obm obo obr obs obt oc- oca ocb occ och ocm oco ocr ocs oct oha ohc ohh ohm oho ohr ohs oht om- oma omb omc omh omm omo omr oms omt oo- ooa oob ooc ooh oom ooo oor oos oot or- ora orb orc orh orm oro orr ors ort os- osa osb osc osh osm oso osr oss ost ot- ota otb otc oth otm oto otr ots ott ra- raa rab rac rah ram rao rar ras rat rba rbb rbc rbh rbm rbo rbr rbs rbt rca rcb rcc rch rcm rco rcr rcs rct rh- rha rhb rhc rhh rhm rho rhr rhs rht rma rmb rmc rmh rmm rmo rmr rms rmt roa rob roc roh rom roo ror ros rot rra rrb rrc rrh rrm rrr rrs rrt rsa rsb rsc rsh rsm rso rsr rss rst rta rtb rtc rtm rto rtr rts rtt saa sab sac sah sam sao sar sas sat sba sbb sbc sbh sbm sbo sbr sbs sbt sca scb scc sch scm sco scr scs sct sh- sha shb shc shh shm sho shr shs sht sma smb smc smh smm smo smr sms smt soa sob soc soh som soo sor sos sot sr- sra srb src srh srm sro srr srs srt ss- ssa ssb ssc ssh ssm sso ssr sss sst sta stb stc sth stm sto str sts stt taa tab tac tah tam tao tar tas tat tba tbb tbc tbh tbm tbo tbr tbs tbt tca tcb tcc tch tcm tco tcr tcs tct th- tha thb thc thh thm tho thr ths tht tma tmb tmc tmh tmm tmo tmr tms tmt to- toa tob toc toh tom too tor tos tot tra trb trc trh trm tro trr trs trt tsa tsb tsc tsh tsm tso tsr tss tst tta ttb ttc tth ttm tto ttr tts ttt