bbbb bbng bbrg bgun bnrr brrr brug brun brut bry- bryn btrt btry bttb bubb bubu bugg bunb bung bunn bunt bunu bur- burb burg burn burr burt buru bury but- butt buty buyu bygg byng byrn byrt byun ggbt gggg ggrn gnrr grbr grrr grub grug grun grur grut gry- gryn gryt gtbr gubb gubu guby gugb gugg gugu gung gunn gunt guny gurb gurg gurn gurr gurt guru gury gutt gutu guty guyu gyn- gyng gynt gyr- gyrn gytt gyuu nbty ngtn ngur nguu nngn nnnn nntn ntnu ntru nttr nuby nung nunn nunt nuny nurn nurr nurt nuru nutt nutu nynt nyny nyrb nytb rbbb rbbr rgtr rnbr rnnt rnut rrrr rrun rubb rubu ruby rugg rung runn runt runy ruru rutt rutu ruty ruun ryng rynn rynt rytt ryun ryyt tbrb tnut trng trtr trub trug trun trut truu try- tryb tryg ttbb tttt tubb tubr tubu tugg tugu tunb tung tunn tunu tuny turb turg turn turr turt turu tury tutt tutu tuty tuyn tyng tynt tyny tyr- tyrr tytt tyty tyyn uggt ugny ugur uguu ungu untb unty unut urgu urry urun urur urut uryn utby uttu utug uuuu uuyn ybry ygun ynug yrun yryn yubu yugg yugu yung yuny yurn yurt yury yutu yuty yuyu yyyy