a-a a-b aaa aab aag aak aam aar aau ab- aba abb abg abk abm abr abu ag- aga agb agg agk agm agr agu aka akb akg akk akm akr aku ama amb amg amk amm amr amu ar- ara arb arg ark arm arr aru au- aua aub aug auk aum aur b-u baa bab bag bak bam bar bau bba bbb bbg bbk bbm bbr bbu bga bgb bgg bgk bgm bgr bgu bka bkb bkg bkk bkm bkr bma bmb bmg bmk bmm bmr bmu bra brb brg brk brm brr bru bua bub bug buk bum bur buu gaa gab gag gak gam gar gau gba gbg gbk gbm gbr gbu gga ggb ggg ggm ggr ggu gka gkb gkm gma gmb gmg gmm gmr gra grb grg grk grm grr gru gu- gua gub gug guk gum gur guu ka- kaa kab kag kak kam kar kau kba kbb kbk kbm kbr kbu kga kgb kgm kgu kkb kkk kkm kkr kku kma kmb kmg kmk kmm kmu kra krg krk krr kru kub kug kuk kum kur kuu m-r maa mab mag mak mam mar mau mba mbb mbg mbk mbm mbr mbu mga mgb mgk mgm mgr mgu mka mkb mkg mkk mkm mkr mku mma mmb mmg mmk mmm mmr mmu mra mrb mrg mrk mrm mrr mru mua mub mug muk mum mur muu ra- raa rab rag rak ram rar rau rba rbb rbg rbk rbm rbr rbu rga rgb rgg rgk rgr rkb rkg rkk rkm rku rma rmb rmg rmm rmr rra rrb rrg rrk rrm rrr rru rua rub rug ruk rum rur ruu ua- uaa uab uag uak uam uar uau uba ubb ubg ubk ubr ubu uga ugb ugg ugk ugm ugr ugu uka ukb ukk ukr uku um- uma umb umg umm umr umu ur- ura urb urg urk urm urr uru uua uug uum uur uuu