-er a-a a-b a-t aaa aab aae aam aar aat aau ab- aba abb abe abm abr abt abu aea aeb aee aem aer aet aeu ama amb ame amm amr amt amu ar- ara arb are arm arr art aru at- ata atb ate atm atr att atu au- aua aub aue aum aur aut b-u baa bab bae bam bar bat bau bba bbb bbe bbm bbr bbt bbu be- bea beb bee bem ber bet beu bma bmb bme bmm bmr bmt bmu bra brb bre brm brr brt bru bta btb bte btm btr btt btu bua bub bue bum bur but buu eaa eab eae eam ear eat eau eba ebb ebe ebm ebr ebt ebu eea eeb eee eem eer eet em- ema emb eme emm emr emt emu era erb ere erm err ert eru eta etb ete etm etr ett etu eu- eua eub eue eur eut m-r maa mab mae mam mar mat mau mba mbb mbe mbm mbr mbt mbu mea meb mee mem mer met meu mma mmb mme mmm mmr mmt mmu mra mrb mre mrm mrr mrt mru mta mtb mte mtm mtr mtt mtu mua mub mue mum mur mut muu ra- raa rab rae ram rar rat rau rba rbb rbe rbm rbr rbt rbu re- rea reb ree rem rer ret reu rma rmb rme rmm rmr rmt rra rrb rrm rrr rrt rru rta rtb rte rtm rtr rtt rtu rua rub rue rum rur rut ruu taa tab tae tam tar tat tau tba tbb tbe tbm tbr tbt tbu te- tea teb tee tem ter tet teu tma tmb tme tmm tmr tmt tmu tra trb tre trm trr trt tru tta ttb tte ttm ttr ttt ttu tua tub tue tum tur tut tuu ua- uaa uab uae uam uar uat uau uba ubb ube ubr ubt ubu uea ueb uee uem uer uet um- uma umb ume umm umr umt umu ur- ura urb ure urm urr urt uru uta utb ute utm utr utt utu uua uue uum uur uut uuu