-ism bbbb bbbs bbfn bbin bffs bfsi bfsr bibb bibi bibs biff bifi biin biis bims bin- bini binn bins birb biri birn birr birs bis- biss bmir bmmi bnib bnim bnin bnrr bnss brfm brim brin bris brns brrm brrr brrs brsb brsr bsff bsfs bsim bsin bsms bsns bsrm bssm fbis fbrs ffff ffii ffrr ffss fibs fiff fifi fifm fiii fimr fini finn fins firm firn firs fisi fism fiss fmri fmsr fmss fnrs frib frim frin fris frmn frns frsb frsm fsfi fsim fssf ibbm ibfi ibim ibis ibms ibns ibri ibsf ibsn ibss ifbb ifim ifis ifni ifnr ifns ifrb ifrf ifri ifsb iiii iiis iinm iirs iisi iism iisr imbi imfi imin imir immi imms imri imrr imsf imsi imsr imss infi infs inis inni innr inns inri inrs inss irbm irfm iri- irin iris irms irri irrs irsf isbn isim isin isis ismi isms isri issf issi issr isss mbbs mbim mbis mbms mbrs mbsf mfbm mfri mfrs mfsb mibs miff mifi miii miin miis mim- mimi mims mini minn mins miri mirr mirs mis- misi misn misr miss mmff mmii mmis mmmm mmms mmrf mnbb mnin mnis mrbb mrbm mrbs mris mrsi msff msfs msmb msmm msms msrb mssf mssi mssm mssr n-ii nfff nfib nfrs nfsm nfsr nibi nibm nibs niff niir nimb nimi nimr nims nini nins nirs nisi niss nmff nmfs nmis nmri nnnn nnss nsbm nsfs nsin nsis nsmb nsnr nssb nssf nssr nsss rbbb rbbr rbbs rbis rbms rbss rib- ribs riff rifs riif riin riis rimi rimm rims rinf rinn riri rirs risi rism riss rmbs rmif rnbr rnin rrif rrrr rsbi rsis rsnn rsnr s-ib s-ii sbbs sbsi sfmm sfnb sfss sibi sibs siff sifr siim simi simm sims sini sinn sins sirf siri sirr sirs sisi siss smbf smif smin smis smrf smsn smss snib snir snns snrs srfi srib srim sris srni srnn ssbn ssbr ssin ssis ssns ssri ssrm ssrs sssb sssf sssi sssm ssss