-th a-a a-b a-c a-t aaa aab aac aah aam aao aar aat ab- aba abb abc abh abm abo abr abt ac- aca acb acc ach acm aco acr act aha ahb ahc ahh ahm aho ahr aht ama amb amc amh amm amo amr amt aoa aob aoc aoh aom aoo aor aot ar- ara arb arc arh arm aro arr art at- ata atb atc ath atm ato atr att baa bab bac bah bam bao bar bat bba bbb bbc bbh bbm bbo bbr bbt bca bcb bcc bch bcm bco bcr bct bha bhb bhc bhh bhm bho bhr bht bma bmb bmc bmh bmm bmo bmr bmt boa bob boc boh bom boo bor bot bra brb brh brm bro brr brt bta btb btc bth btm bto btr btt c-- caa cab cac cah cam cao car cat cba cbb cbc cbh cbm cbo cbr cbt cca ccb ccc cch ccm cco ccr cct ch- cha chb chc chh chm cho chr cht cma cmb cmc cmh cmm cmo cmr cmt co- coa cob coc coh com coo cor cot cra crb crc crh crm cro crr crt cta ctb ctc cth ctm cto ctr ctt haa hab hac hah ham hao har hat hba hbb hbc hbh hbm hbo hbr hbt hca hcb hcc hch hcm hco hcr hct hha hhb hhc hhh hhm hho hhr hht hma hmb hmc hmh hmm hmo hmr hmt hoa hob hoc hoh hom hoo hor hot hr- hra hrb hrc hrh hrm hro hrr hrt hta htb htc hth htm hto htr htt m-o m-r maa mab mac mah mam mao mar mat mba mbb mbc mbh mbm mbo mbr mbt mc- mca mcb mcc mch mcm mco mcr mct mha mhc mhh mhm mho mhr mht mma mmb mmc mmh mmm mmo mmr mmt moa mob moc moh mom moo mor mot mra mrb mrc mrh mrm mro mrr mrt mta mtb mtc mth mtm mto mtr mtt oaa oab oac oah oam oao oar oat ob- oba obb obc obh obm obo obr obt oc- oca ocb occ och ocm oco ocr oct oha ohc ohh ohm oho ohr oht om- oma omb omc omh omm omo omr omt oo- ooa oob ooc ooh oom ooo oor oot or- ora orb orc orh orm oro orr ort ot- ota otb otc oth otm oto otr ott ra- raa rab rac rah ram rao rar rat rba rbb rbc rbh rbm rbo rbr rbt rca rcb rcc rch rcm rco rcr rct rh- rha rhb rhc rhh rhm rho rhr rht rma rmb rmc rmh rmm rmo rmr rmt roa rob roc roh rom roo ror rot rra rrb rrc rrh rrm rrr rrt rta rtb rtc rtm rto rtr rtt taa tab tac tah tam tao tar tat tba tbb tbc tbh tbm tbo tbr tbt tca tcb tcc tch tcm tco tcr tct th- tha thb thc thh thm tho thr tht tma tmb tmc tmh tmm tmo tmr tmt to- toa tob toc toh tom too tor tot tra trb trc trh trm tro trr trt tta ttb ttc tth ttm tto ttr ttt