-ism bbbb bbbs bblb bbls bibb bibi bibl bibs biis bili bill bils bilt bilu bims birb biri birl birr birs birt biru bis- bisl biss bist bisu bits bitt bitu blbt blim blir blis blit blls blss blst blts blub blum blur blus blut bmir bmmi bmts bmus bril brim bris brit brls brrm brrr brrs brsb brsr brst brum brus brut bsim bsms bsmt bsrm bssm bsts btrt btss bttb btus bubb bubi bubs bubu buir buis buit buiu bulb buli bull buls bult bulu bum- bumb bums bur- burb buri burl burm burr burs burt buru busi buss bust busu but- buti buts butt buus ibbm ibim ibis ibml ibms ibri ibss ibtb ibtl ibts ibus iiii iiis iiit iirs iisi iism iisr iist iisu iitm iitr iitt iium ilbm ilir ilis ilit ill- illi ills illt ilmr ilrm ilts ilum ilus ilut imbi imir imit imli immi imms immt imri imrr imsi imsr imss imst imsu imts imus irbm iri- iril iris irlb irms irri irrs irti irts irul irus isbl isbt isil isim isis isit isls ismi isms isri issi issr isss issu isti istr ists isum isus itbs itil itim itis itll itms itri itrs itsi itsu itum itur iuiu iums iuss iust lblr lbms lbrs lbrt libr libs libu liii liir liis lilb lili lill lils lilt lilu limb limi liml limm lims limu liri lirl lirr lirs lirt liru lisi liss list lisu litb liti litl litr lits litt litu lius liut llbs llll llms lmii lmmr lmms lmrs lmsi lmsr lrmt lrrr lrsm lrst lrts ls-r lsbu lssr lsts ltbl ltib ltrs ltsi ltsr lttr lubs luis luit luli lull lulu lumb lumi lums luri lurs lurt lusi luss lust luti luts mbbs mbim mbis mbms mbrs mbsl mbus mibs miii miis miit mili mill milr mils milt milu mim- mimi mims miri mirl mirr mirs mirt miru mis- misi misl misr miss mist misu mit- mitb miti mitm mits mitt mitu miui mlii mlis mlit mlrs mlss mltb mltr mmii mmis mmli mmmm mmms mmst mmsu mmts mmus mrbb mrbm mrbs mris mrls mrml mrsi mrsl mrtm mrts mrtt msil msmb msml msmm msms msmu msrb msrt mssi mssm mssr msst mstr msts msus mtbs mtlb mtrl mtrr mtsl mtss mtst mttr mtts mubi mubs muil muir muis muit muli mull mulm mult mulu mumm mums mumu muri murl murr murs murt muru musi musl muss must musu muti muts mutt mutu muut rbbb rbbr rbbs rbis rbms rbsl rbss rbst rib- ribs ribu riis rill rilu rimi rimm rims rimu riri rirs risi rism riss rist risu riti ritl rits ritt ritu rius rlls rlml rlms rmbs rmll rmst rmtu rrrr rrum rsbi rsis rsml rssl rsts rstu rsum rtls rtlt rtmi rtml rtms rtss rtts rubb rubi rubs rubu ruis ruit rull rumb rumi ruml rumm rums rumt ruri rurs ruru rusi russ rust rusu ruti rutl ruts rutt rutu s-ib s-ii sbbs sbml sbsi sbst sbus sibi sibs sibu siim siit sil- sili sill sils silt silu simi simm sims simt siri sirr sirs sirt siru sisi siss sist sisu sit- siti sits sitt situ siui sium sius siut sl-i slib slim slir slit sllm slmm slrs slst slsu slts slub slum slur slut smil smis smit smls smrt smss smti smtu smur smus smut srib srim sris srtr srub ssbr ssis ssit sslt ssml ssri ssrl ssrm ssrs sssb sssi sssm ssss sstb sstl ssts stbs stib stil stim stir stis stit stlt stms stmt stri strs stru stsi stsm stss sttr stub stul stum stur stus stut sub- subb subi subl subm subs suir suis suit sul- suli sull sulm sult sulu sum- sumi sums sumu sur- suri surr surs surt suru sus- susi suss sust susu suti sutu suum suus tbbs tbil tbit tbrb tbst tibi tibs tibu tiit tiiu till tilr tils tilt timi timm tims timu tirb tiri tirl tirr tirs tiru tisb tisi tism tiss tist titi tits titt titu tium tlli tlrs tmbr tmil tmsi tmtt tri- trib tril trim tris trit trmb trmi trml trms trmu trsi trst trtr trub trus trut truu tsis tssi tssm tssr tsst tstm tsts tsui tsum ttbb ttim ttml ttms ttss tttt ttul tubb tubr tubs tubu tuil tuim tuis tuit tuiu tuli tull tulu tumb tumi tums tumu turb turi turm turr turs turt turu tusi tusm tuss tust tuti tutl tuts tutt tutu tuum ubbi ubii ubir ubis ubit ubli ubls uiml uims uirr uist uits ulim ulli ullr ulmi ulmu ulti ults ultt ulul ulum ulus umb- umbi umit umms umri umsu umts umus umut urbi urbs urib urim uris uriu urls urmi urri ursi urss ursu urts urum urur urus urut usbl usbr usbs usim usis uslu usmm usms ussb ussr usss usst ussu ustb usti ustm usts usui usul usus util utis utmb utri utsl utti uttu uulu uuri uusi uuuu