-er a-a a-b a-t aaa aab aae aak aam aar aat aau ab- aba abb abe abk abm abr abt abu aea aeb aee aek aem aer aet aeu aka akb ake akk akm akr aku ama amb ame amk amm amr amt amu ar- ara arb are ark arm arr art aru at- ata atb ate atm atr att atu au- aua aub aue auk aum aur aut b-u baa bab bae bak bam bar bat bau bba bbb bbe bbk bbm bbr bbt bbu be- bea beb bee bek bem ber bet beu bka bkb bke bkk bkm bkr bkt bma bmb bme bmk bmm bmr bmt bmu bra brb bre brk brm brr brt bru bta btb bte btk btm btr btt btu bua bub bue buk bum bur but buu eaa eab eae eak eam ear eat eau eba ebb ebe ebk ebm ebr ebt ebu eea eeb eee eek eem eer eet eka ekb eke ekr ekt eku em- ema emb eme emk emm emr emt emu era erb ere erk erm err ert eru eta etb ete etk etm etr ett etu eu- eua eub eue eur eut k-t ka- kaa kab kae kak kam kar kat kau kba kbb kbe kbk kbm kbr kbu ke- kea keb kee kek kem ker ket kkb kke kkk kkm kkr kkt kku kma kmb kme kmk kmm kmt kmu kra krk krr krt kru kta ktb kte ktk ktm ktr ktt ktu kub kue kuk kum kur kut kuu m-r maa mab mae mak mam mar mat mau mba mbb mbe mbk mbm mbr mbt mbu mea meb mee mek mem mer met meu mka mkb mke mkk mkm mkr mkt mku mma mmb mme mmk mmm mmr mmt mmu mra mrb mre mrk mrm mrr mrt mru mta mtb mte mtk mtm mtr mtt mtu mua mub mue muk mum mur mut muu ra- raa rab rae rak ram rar rat rau rba rbb rbe rbk rbm rbr rbt rbu re- rea reb ree rek rem rer ret reu rkb rke rkk rkm rkt rku rma rmb rme rmm rmr rmt rra rrb rrk rrm rrr rrt rru rta rtb rte rtk rtm rtr rtt rtu rua rub rue ruk rum rur rut ruu taa tab tae tak tam tar tat tau tba tbb tbe tbk tbm tbr tbt tbu te- tea teb tee tek tem ter tet teu tka tkb tke tkk tkm tkr tkt tma tmb tme tmk tmm tmr tmt tmu tra trb tre trk trm trr trt tru tta ttb tte ttk ttm ttr ttt ttu tua tub tue tuk tum tur tut tuu ua- uaa uab uae uak uam uar uat uau uba ubb ube ubk ubr ubt ubu uea ueb uee uem uer uet uka ukb uke ukk ukr uku um- uma umb ume umm umr umt umu ur- ura urb ure urk urm urr urt uru uta utb ute utk utm utr utt utu uua uue uum uur uut uuu