b-u bbb bbf bbi bbm bbn bbr bbs bbu bfb bff bfi bfm bfn bfr bfs bfu bi- bib bif bii bim bin bir bis biu bmb bmf bmi bmm bmn bmr bms bmu bnb bnf bni bnn bnr bns bnu brb brf bri brm brn brr brs bru bsb bsf bsi bsm bsn bsr bss bsu bub buf bui bum bun bur bus buu fbb fbf fbi fbm fbn fbr fbs fbu fff ffi ffm ffn ffr ffs ffu fib fif fii fim fin fir fis fiu fmb fmf fmi fmm fmn fmr fms fmu fnb fnf fni fnm fnn fnr fns fnu frb frf fri frm frn frr frs fru fsb fsf fsi fsm fsn fsr fss fsu fub fuf fui fum fun fur fus fuu i-f ibb ibf ibi ibm ibn ibr ibs ibu ifb iff ifi ifm ifn ifr ifs ifu iib iif iii iim iin iir iis iiu im- imb imf imi imm imn ims imu in- inb inf ini inm inn inr ins inu ir- irb irf iri irm irn irr irs iru is- isb isf isi ism isn isr iss isu iu- iub iui ium iur ius m-f m-r mbb mbf mbi mbm mbr mbs mbu mfb mff mfi mfm mfn mfr mfs mfu mi- mib mif mii mim min mir mis miu mmb mmf mmi mmm mmn mmr mms mmu mnb mnf mni mnm mnn mnr mns mnu mrb mrf mri mrm mrn mrr mrs mru msb msf msi msm msn msr mss msu mub muf mui mum mun mur mus muu n-i nbb nbf nbi nbm nbn nbr nbs nbu nfb nff nfi nfn nfr nfs nfu nib nif nii nim nin nir nis niu nmb nmi nmm nmn nmr nms nmu nnb nnf nni nnm nnn nns nnu nrb nrf nri nrm nrn nrr nrs nru nsb nsf nsi nsm nsn nsr nss nsu nub nui num nun nur nus nuu rbb rbf rbi rbm rbn rbr rbs rbu rfb rff rfi rfm rfn rfr rfs rfu rib rif rii rim rin rir ris rmb rmf rmi rmm rmn rmr rms rnb rni rnm rnn rnr rns rnu rrb rrf rri rrm rrn rrr rrs rru rsb rsf rsi rsm rsn rsr rss rsu rub ruf rui rum run rur rus ruu sbb sbf sbi sbm sbn sbr sbs sbu sfb sff sfi sfm sfn sfr sfs sfu sib sif sii sim sin sir sis siu smb smf smi smm smn smr sms smu snb snf sni snm snn snr sns snu sr- srb srf sri srm srn srr srs ss- ssb ssf ssi ssm ssn ssr sss ssu sub suf sui sum sun sur sus suu ubb ubf ubi ubn ubr ubs ubu uff ufi ufm ufn ufr ufs ufu uib uif uii uim uin uir uis uiu um- umb umf umi umm umn umr ums umu un- unb unf uni unm unn unr uns unu ur- urb urf uri urm urn urr urs uru usb usf usi usm usn usr uss usu uum uun uur uus uuu

-ism bbbb bbbs bbfn bbin bffs bfsi bfsr bibb bibi bibs biff bifi biin biis bims bin- bini binn bins binu birb biri birn birr birs biru bis- biss bisu bmir bmmi bmus bnib bnim bnin bnrr bnss brfm brfu brim brin bris brns brrm brrr brrs brsb brsr brum brun brus bsff bsfs bsim bsin bsms bsns bsrm bssm bubb bubi bubs bubu buff bufr buif buin buir buis buiu bum- bumb bumf bums bunb buni bunn buns bunu bur- burb buri burm burn burr burs buru busi buss busu buus fbis fbrs fbus ffff ffii ffrr ffss ffun fibs fiff fifi fifm fiii fimr fini finn fins firm firn firs fisi fism fiss fisu fmri fmsr fmss fnrs fnuf frib frim frin fris frmn frns frsb frsm frub frum frun fsfi fsim fssf fubb fubs fubu fuff fufu fuir fumi fums funf funs fur- furi furm furn furr furs fusi fuss fusu ibbm ibfi ibim ibis ibms ibns ibri ibsf ibsn ibss ibus ifbb ifim ifis ifni ifnr ifns ifrb ifrf ifri ifsb iiii iiis iinm iirs iisi iism iisr iisu iium imbi imfi imin imir immi imms imri imrr imsf imsi imsr imss imsu imun imus infi infs inis inni innr inns innu inri inrs inss insu inui inun inus irbm irfm irfu iri- irin iris irms irri irrs irsf irun irus isbn isim isin isis ismi isms isri issf issi issr isss issu isum isus iuiu iums iuss mbbs mbim mbis mbms mbrs mbsf mbus mfbm mfri mfrs mfsb mibs miff mifi miii miin miis mim- mimi mims mini minn mins minu miri mirr mirs miru mis- misi misn misr miss misu miui mmff mmii mmis mmmm mmms mmrf mmsu mmun mmus mnbb mnin mnis mrbb mrbm mrbs mris mrsi msff msfs msmb msmm msms msmu msrb mssf mssi mssm mssr msun msus mubi mubs muff mufi mufu muin muir muis mumm mums mumu muni munn muns munu muri murn murr murs muru musi muss musu n-ii nbuf nfff nfib nfrs nfsm nfsr nfsu nibi nibm nibs niff niir niiu nimb nimi nimr nims nimu nini nins nirs niru nisi niss nisu niur nmff nmfs nmis nmri nnnn nnss nsbm nsfs nsin nsis nsmb nsnr nssb nssf nssr nsss nsub nubi nubs nuff nuim nuin numb numi numm nums numu nunn nuns nuri nurn nurr nurs nuru nusi nuss nusu rbbb rbbr rbbs rbis rbms rbss rib- ribs ribu riff rifs rifu riif riin riis rimi rimm rims rimu rinf rinn riri rirs risi rism riss risu rius rmbs rmif rnbr rnin rrif rrrr rrum rrun rsbi rsis rsnn rsnr rsum rubb rubi rubs rubu ruff ruif ruin ruis rumb rumi rumm rums runf runi runn runs ruri rurs ruru rusi russ rusu ruun s-ib s-ii sbbs sbsi sbus sfmm sfnb sfss sfsu sibi sibs sibu siff sifr sifu siim simi simm sims sini sinn sins sinu sirf siri sirr sirs siru sisi siss sisu siui sium