-ism ffff ffii ffrr ffss ffun fiff fifi fifm fiii fimr fini finn fins firm firn firs fisi fism fiss fisu fmri fmsr fmss fnrs fnuf frim frin fris frmn frns frsm frum frun fsfi fsim fssf fuff fufu fuir fumi fums funf funs fur- furi furm furn furr furs fusi fuss fusu ifim ifis ifni ifnr ifns ifrf ifri iiii iiis iinm iirs iisi iism iisr iisu iium 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 irfm irfu iri- irin iris irms irri irrs irsf irun irus isim isin isis ismi isms isri issf issi issr isss issu isum isus iuiu iums iuss mfri mfrs 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 mnin mnis mris mrsi msff msfs msmm msms msmu mssf mssi mssm mssr msun msus muff mufi mufu muin muir muis mumm mums mumu muni munn muns munu muri murn murr murs muru musi muss musu n-ii nfff nfrs nfsm nfsr nfsu niff niir niiu nimi nimr nims nimu nini nins nirs niru nisi niss nisu niur nmff nmfs nmis nmri nnnn nnss nsfs nsin nsis nsnr nssf nssr nsss nuff nuim nuin numi numm nums numu nunn nuns nuri nurn nurr nurs nuru nusi nuss nusu riff rifs rifu riif riin riis rimi rimm rims rimu rinf rinn riri rirs risi rism riss risu rius rmif rnin rrif rrrr rrum rrun rsis rsnn rsnr rsum ruff ruif ruin ruis rumi rumm rums runf runi runn runs ruri rurs ruru rusi russ rusu ruun s-ii sfmm sfss sfsu siff sifr sifu siim simi simm sims sini sinn sins sinu sirf siri sirr sirs siru sisi siss sisu siui sium sius smif smin smis smrf smsn smss smur smus snfu snir snns snrs snum snur snus srfi srim sris srni srnn ssin ssis ssns ssri ssrm ssrs sssf sssi sssm ssss suf- suff sufi sufr sufs sufu suin suir suis sum- sumi sums sumu sun- suni sunn suns sunu sur- surf suri surn surr surs suru sus- susi suss susu suum suus ufms uims uirr umff umms umri umsu umus uni- unif unii unin unir unis unmr unni unns unrf unrs uns- unum unus urff urfi urif urim urin uris uriu urmi urni urns urri ursi urss ursu urum urun urur urus usfi usfs usif usim usin usis usmm usms usnr usnu ussf ussr usss ussu usui usun usus uuni uuri uusi uuuu