-ism bbbb bbbs bibb bibi bibs biis biku bims birb biri birk birr birs biru bis- bisk biss bisu bmir bmmi bmus brik brim bris brkb brrm brrr brrs brsb brsr brum brus bsim bsms bsrm bssm bubb bubi bubs bubu buik buir buis buiu buki bukk buku bum- bumb bums bur- burb buri burk burm burr burs buru busi busk buss busu buus ibbm ibim ibis ibms ibri ibss ibus iiii iiis iirs iisi iism iisr iisu iium ikki ikri iksu imbi imir immi imms imri imrr imsi imsk imsr imss imsu imus irbm iri- iris irki irks irms irri irrs irus isim isis isku ismi isms isri issi issr isss issu isum isus iuiu iums iuss kbbb kbbi kbbk kbbm kbbr kbbs kbbu kbib kbik kbim kbis kbiu kbkb kbkk kbkr kbmb kbmi kbmr kbms kbrb kbri kbrk kbru kbsb kbsi kbsk kbsm kbsr kbss kbsu kbub kbuk kbur kbus kbuu kibb kibi kibr kibs kibu kiii kiik kiis kiiu kiki kikk kikr kiku kimb kimi kimm kims kirb kiri kirk kirr kirs kiru kisi kisk kism kisr kiss kisu kiur kiuu kkbb kkbi kkbr kkbs kkik kkim kkkk kkmi kkmk kkmr kkms kkrb kkrk kkrr kkrs kksi kksm kksr kkss kksu kkus kkuu kmbi kmbr kmbs kmis kmkk kmks kmmk kmmm kmmr kmms kmrb kmri kmrr kmrs kmsb kmsi kmsr kmss kmsu kmur kmus krbb krbi krbk krbm krbr krib krik krim kris krki krkk krkr krks krku krmb krmr krms krrb krri krrk krrm krrr krrs krsk krsr krss krsu krui kruk krum krur ksbi ksbr ksbs ksib ksii ksik ksim ksir ksis kskb kskk kskr ksks ksku ksmb ksmm ksmr ksms ksmu ksrb ksrm ksrr ksrs kssi kssm kssr ksss kssu ksub ksui ksum ksuu kubb kubr kubs kubu kuik kuki kukk kuks kuku kumi kumm kumr kumu kurb kuri kurk kurm kurr kurs kuru kusb kusu kuub kuuk kuur kuuu mbbs mbim mbis mbms mbrs mbus mibs miii miis miki mikk miks miku mim- mimi mims miri mirk mirr mirs miru mis- misi misr miss misu miui mkks mksm mmii mmis mmmm mmms mmsu mmus mrbb mrbm mrbs mris mrkr mrsi mruk msmb msmm msms msmu msrb mssi mssm mssr msus mubi mubs muir muis muki mumm mums mumu muri murk murr murs muru musi musk muss musu rbbb rbbr rbbs rbis rbmk rbms rbss rib- ribs ribu riis riki rikk riku rimi rimm rims rimu riri rirs risi risk rism riss risu rius rkss rmbs rrkm rrrr rrum rsbi rsis rsum rubb rubi rubs rubu ruis ruki rukk ruku rumb rumi rumm rums ruri rurs ruru rusi rusk russ rusu s-ib s-ii sbbs sbrk sbsi sbus sibi sibs sibu siik siim siki sikr siks siku simi simm sims siri sirk sirr sirs siru sisi sisk siss sisu siui sium sius skik skim skir skis skiu skss skui skum skur smis smkb smki smrk smss smur smus srib srim sris srub ssbr ssis ssri ssrm ssrs sssb sssi sssm ssss sub- subb subi subm subs suir suis suki suks suku sum- sumi sums sumu sur- suri surr surs suru sus- susi susk suss susu suum suus ubbi ubii ubik ubir ubis uims uirr ukum ukur umb- umbi umik umms umri umsu umus urbi urbs urib urik urim uris uriu urmi urri ursi urss ursu uruk urum urur urus us-k usbr usbs usim usis usmm usms ussb ussr usss ussu usui usus uuri uusi uuuu