b-u bbb bbi bbm bbr bbs bbt bbu bby bi- bib bii bim bir bis bit biu biy bmb bmi bmm bmr bms bmt bmu brb bri brm brr brs brt bru bry bsb bsi bsm bsr bss bst bsu bsy btb bti btm btr bts btt btu bty bub bui bum bur bus but buu buy by- byi bym byr bys byt byu ibb ibi ibm ibr ibs ibt ibu iby iib iii iim iir iis iit iiu im- imb imi imm ims imt imu imy ir- irb iri irm irr irs irt iru iry is- isb isi ism isr iss ist isu isy itb iti itm its itt itu ity iu- iub iui ium iur ius iut iym iyr iys iyt iyy m-r mbb mbi mbm mbr mbs mbt mbu mi- mib mii mim mir mis mit miu miy mmb mmi mmm mmr mms mmt mmu mrb mri mrm mrr mrs mrt mru mry msb msi msm msr mss mst msu msy mtb mti mtm mtr mts mtt mtu mub mui mum mur mus mut muu muy my- myb mym myr mys myt myu rbb rbi rbm rbr rbs rbt rbu rib rii rim rir ris rit riy rmb rmi rmm rmr rms rmt rrb rri rrm rrr rrs rrt rru rsb rsi rsm rsr rss rst rsu rtb rti rtm rtr rts rtt rtu rty rub rui rum rur rus rut ruu ruy ry- rym ryr rys ryu ryy sbb sbi sbm sbr sbs sbt sbu sby sib sii sim sir sis sit siu smb smi smm smr sms smt smu smy sr- srb sri srm srr srs srt sry ss- ssb ssi ssm ssr sss sst ssu stb sti stm str sts stt stu sty sub sui sum sur sus sut suu suy sy- syb syi sym syr sys syt syu tbb tbi tbm tbr tbs tbt tbu tib tii tim tir tis tit tiu tiy tmb tmi tmm tmr tms tmt tmu tmy trb tri trm trr trs trt tru try tsb tsi tsm tsr tss tst tsu tsy ttb tti ttm ttr tts ttt ttu tty tub tui tum tur tus tut tuu tuy tym tyr tys tyt ubb ubi ubr ubs ubt ubu uby uib uii uim uir uis uit uiu um- umb umi umm umr ums umt umu ur- urb uri urm urr urs urt uru ury usb usi usm usr uss ust usu utb uti utm utr uts utt utu uty uum uur uus uut uuu uyi uys uyu ybi ybm ybr ybs yby yii yim yir yis yit ymi ymm yms ymt yrs yrt yru ysb ysi ysm ysr yss yst ysu ysy ytm ytr yts ytt ytu yui yum yur yus yut yuu yuy yyb yys yyt yyu yyy

-ism bbbb bbbs bibb bibi bibs biis bims birb biri birr birs birt biru biry bis- biss bist bisu bisy bits bitt bitu biys bmir bmmi bmts bmus brim bris brit brrm brrr brrs brsb brsr brst brum brus brut bry- bsim bsms bsmt bsrm bssm bsts btrt btry btss bttb btus bubb bubi bubs bubu buir buis buit buiu bum- bumb bums bur- burb buri burm burr burs burt buru bury busi buss bust busu busy but- buti buts butt buty buus buyi buys buyu byit byrt bysb bysi bysm byss byst bysy byts i-by ibbm ibim ibis ibms ibri ibss ibtb ibts ibus ibuy ibyi iiii iiis iiit iirs iisi iism iisr iist iisu iitm iitr iitt iium imbi imir imit immi imms immt immy imri imrr imsi imsr imss imst imsu imts imus irbm irby iri- iris iriy irms irri irrs irti irts irus isbt isim isis isit ismi isms ismy isri issi issr isss issu issy isti istr ists isty isum isus isys itbs itby itim itis itms itri itrs itry itsi itsu itsy itty itum itur itym iuiu iums iuss iust iuty mbbs mbim mbis mbms mbrs mbus mibs miii miis miit mim- mimi mims mimy miri mirr mirs mirt miru miry mis- misi misr miss mist misu misy mit- mitb miti mitm mits mitt mitu mity miui miyu mmii mmis mmmm mmms mmst mmsu mmts mmus mmyy mrbb mrbm mrbs mris mrsi mrtm mrts mrtt msmb msmm msms msmu msrb msrt mssi mssm mssr msst mstr msts msus mtbs mtrr mtss mtst mttr mtts mubi mubs muir muis muit mumm mums mumu mumy muri murr murs murt muru mury musi muss must musu muti muts mutt mutu muut muys mybb mybi myi- myir myis myit mymy myrr myrt myry mys- myss myst myus myys rbbb rbbr rbbs rbis rbms rbss rbst rib- ribs ribu riby riis rimi rimm rims rimu rimy riri rirs risi rism riss rist risu riti rits ritt ritu rius rmbs rmst rmtu rrrr rrum rsbi rsis rsts rstu rsum rtmi rtms rtss rtts rubb rubi rubs rubu ruby ruis ruit rumb rumi rumm rums rumt rumy ruri rurs ruru rusi russ rust rusu rusy ruti ruts rutt rutu ruty ruyi ruys ryim ryis rysy rytt ryyt s-ib s-ii sbbs sbsi sbst sbus sibi sibs sibu siby siim siit simi simm sims simt simy siri sirr sirs sirt siru sisi siss sist sisu sisy sit- siti sits sitt situ sity siui sium sius siut siyi siyu smis smit smrt smry smss smti smtu smty smur smus smut srby srib srim sris srtr srub ssbr ssby ssis ssit ssri ssrm ssrs sssb sssi sssm ssss sstb ssts stbs stib stim stir stis stit stms stmt stri strs stru stry stsi stsm stss sttr stub stum stur stus stut stuy styr stys sub- subb subi subm subs suir suis suit sum- sumi sums sumu sumy sur- suri surr surs surt suru sury sus- susi suss sust susu susy suti sutu suty suum suus suyi suyr suyu syis sym- symi syms syrs syrt syry syss syst sytt tbbs tbit tbrb tbst tibi tibs tibu tiit tiiu timi timm tims timu tirb tiri tirr tirs tiru tiry tisb tisi tism tiss tist titi tits titt