b-r-k bibin bibri bikin binub birin birni birun birur brini brink brinn brnik brrrr bruik bruin bruiu bruni brunk brunn bruri bruun buiki buirn bukin bukk- bukki buknu bunin bunki bunuk bunun burin burn- burri burru buruk burun ibbur ibrik ibuki iiiii iiuni ikiru ikuri inbin inini inink inkin inniu inrun inurn iriki irink irinn kibbi kibi- kibun kiiki kiinu kikin kikki kikuu kin-u kinin kirin kirki kirnu kirui knibb knurr kribi krini krink krubi kruki krunk kruun kubik kubin kubri kukri kukui kukur kunbi kunin kunku kunri kunur kurbu kurik kurin kurir kurki kurku kurni kuruk nibbi niibi nikin nikki ninib ninku ninur nkubu nu-nu nunki nunni nunun nurik nurin nurri nuruk nurun ribbi ribin rikki rinku rubbi rubik rubin ruiru runin rurik rurki u-n-i u-nii ubirr ukkin unini uninn unkur unnun unnur unrun unurn urin- urkun urubu ururi uuuuu