a-a a-b aaa aab aae aak aam aau ab- aba abb abe abk abm abu aea aeb aee aek aem aeu aka akb ake akk akm aku ama amb ame amk amm amu au- aua aub aue auk aum b-u baa bab bae bak bam bau bba bbb bbe bbk bbm bbu be- bea beb bee bek bem beu bka bkb bke bkk bkm bma bmb bme bmk bmm bmu bua bub bue buk bum buu eaa eab eae eak eam eau eba ebb ebe ebk ebm ebu eea eeb eee eek eem eka ekb eke eku em- ema emb eme emk emm emu eu- eua eub eue ka- kaa kab kae kak kam kau kba kbb kbe kbk kbm kbu ke- kea keb kee kek kem kkb kke kkk kkm kku kma kmb kme kmk kmm kmu kub kue kuk kum kuu maa mab mae mak mam mau mba mbb mbe mbk mbm mbu mea meb mee mek mem meu mka mkb mke mkk mkm mku mma mmb mme mmk mmm mmu mua mub mue muk mum muu ua- uaa uab uae uak uam uau uba ubb ube ubk ubu uea ueb uee uem uka ukb uke ukk uku um- uma umb ume umm umu uua uue uum uuu