-th a-a a-b a-t aaa aab aae aah aam aao aat ab- aba abb abe abh abm abo abt aea aeb aee aeh aem aeo aet aha ahb ahe ahh ahm aho aht ama amb ame amh amm amo amt aoa aob aoe aoh aom aoo aot at- ata atb ate ath atm ato att baa bab bae bah bam bao bat bba bbb bbe bbh bbm bbo bbt be- bea beb bee beh bem beo bet bha bhb bhe bhh bhm bho bht bma bmb bme bmh bmm bmo bmt boa bob boe boh bom boo bot bta btb bte bth btm bto btt eaa eab eae eah eam eao eat eba ebb ebe ebh ebm ebo ebt eea eeb eee eem eeo eet eha ehb ehe ehh ehm eho eht em- ema emb eme emh emm emo emt eo- eoa eob eoe eoh eom eoo eot eta etb ete eth etm eto ett haa hab hae hah ham hao hat hba hbb hbe hbh hbm hbo hbt he- hea heb hee heh hem heo het hha hhb hhe hhh hhm hho hht hma hmb hme hmh hmm hmo hmt hoa hob hoe hoh hom hoo hot hta htb hte hth htm hto htt m-o maa mab mae mah mam mao mat mba mbb mbe mbh mbm mbo mbt mea meb mee meh mem meo met mha mhh mhm mho mht mma mmb mme mmh mmm mmo mmt moa mob moe moh mom moo mot mta mtb mte mth mtm mto mtt oaa oab oae oah oam oao oat ob- oba obb obe obh obm obo obt oea oeb oee oeh oem oeo oet oha ohe ohh ohm oho oht om- oma omb ome omh omm omo omt oo- ooa oob ooh oom ooo oot ot- ota otb ote oth otm oto ott taa tab tae tah tam tao tat tba tbb tbe tbh tbm tbo tbt te- tea teb tee teh tem teo tet th- tha thb the thh thm tho tht tma tmb tme tmh tmm tmo tmt to- toa tob toe toh tom too tot tta ttb tte tth ttm tto ttt