bbbb bibb bibi biku birb biri birk birr biru bmir bmmi brik brim brkb brrm brrr brum bubb bubi bubu buik buir buiu buki bukk buku bum- bumb bur- burb buri burk burm burr buru ibbm ibim ibri iiii iium ikki ikri imbi imir immi imri imrr irbm iri- irki irri iuiu kbbb kbbi kbbk kbbm kbbr kbbu kbib kbik kbim kbiu kbkb kbkk kbkr kbmb kbmi kbmr kbrb kbri kbrk kbru kbub kbuk kbur kbuu kibb kibi kibr kibu kiii kiik kiiu kiki kikk kikr kiku kimb kimi kimm kirb kiri kirk kirr kiru kiur kiuu kkbb kkbi kkbr kkik kkim kkkk kkmi kkmk kkmr kkrb kkrk kkrr kkuu kmbi kmbr kmkk kmmk kmmm kmmr kmrb kmri kmrr kmur krbb krbi krbk krbm krbr krib krik krim krki krkk krkr krku krmb krmr krrb krri krrk krrm krrr krui kruk krum krur kubb kubr kubu kuik kuki kukk kuku kumi kumm kumr kumu kurb kuri kurk kurm kurr kuru kuub kuuk kuur kuuu mbim miii miki mikk miku mim- mimi miri mirk mirr miru miui mmii mmmm mrbb mrbm mrkr mruk mubi muir muki mumm mumu muri murk murr muru rbbb rbbr rbmk rib- ribu riki rikk riku rimi rimm rimu riri rrkm rrrr rrum rubb rubi rubu ruki rukk ruku rumb rumi rumm ruri ruru ubbi ubii ubik ubir uirr ukum ukur umb- umbi umik umri urbi urib urik urim uriu urmi urri uruk urum urur uuri uuuu