-ism bbbb bbbs bbeb bebb bebe bebi beeb beef beem beer bees befe beff beim beir beis beme bere beri berm berr bers bes- bese besm bess bffs bfme bfsi bfsr bibb bibe bibi bibs bieb bief bier bies biff bifi biis bims birb bire biri birr birs bis- bise biss bmir bmmi breb bree bref brei brem brer bres brfm brie brim bris brrm brrr brrs brsb brsr bseb bsee bser bses bsff bsfs bsim bsms bsrm bsse bssm ebbr ebbs eber ebes ebis eeee eees eefe eems eers eese eesi efbr efes effi effs efmi efsi efsm eiei eier eies eifs eime eimi eims eire eirs eise eiss embe embi embr embs emer emes emii emim emir emis emme emmi emms emre emrs emse erbb erbe ereb erei erem erer eres erfs erie erim eris erme erms erre errs erse ersi esbs esee esem eser eses esfs esie esis esme esmr esri esse essi fbis fbrs febs feeb feem feer fees fefe feff fefi feie feir feis femb feme femi femm fems ferb fere ferm ferr fers fese fess ffee ffff ffii ffrr ffss fibe fibs fief fier fies fife fiff fifi fifm fiii fime fimr fire firm firs fise fisi fism fiss fmri fmsr fmss free frei frem fres frib frie frim fris frsb frsm fsfi fsim fssf i-be ibbm ibes ibfi ibie ibim ibis ibms ibri ibsf ibss ieie ieme iems iere ieri iers iesi iesr ifbb ifer ifes ifim ifis ifrb ifrf ifri ifsb iies iiie iiii iiis iirs iisi iism iisr imbe imbi imer imes imfi imir imme immi imms imre imri imrr imsf imsi imsr imss irbe irbm iree irem irer ires irfe irfm iri- irie iris irms irre irri irrs irse irsf isbe iseb isee iser ises isie isim isis isme ismi isms isri isse issf issi issr isss mbbs mbes mbim mbis mbms mbrs mbsf mebe meef meem meer mees mefe meff mefi meir meis meme memr mems mer- merb mere merf meri merm mers mes- mese mesi mesr mess mfbm mfri mfrs mfsb mibs miee miem mier mies miff mifi miii miis mim- mime mimi mims mire miri mirr mirs mis- mise misi misr miss mmes mmff mmii mmis mmmm mmms mmrf mmse mrbb mrbm mrbs mreb mree mres mris mrse mrsi msee msem msff msfs msmb msmm msms msrb mssf mssi mssm mssr rbbb rbbr rbbs rbis rbms rbss rebb rebe rebs reeb reef reem rees refe reff refi refr refs reif reii reim reir reis reme remi rems rere reri rers rese resi ress rfef rfem rib- ribe ribs rief riem rier ries rife riff rifs riif riis rime rimi rimm rims rire riri rirs rise risi rism riss rmbs rmif rrif rrrr rsbi rsee rsis rsme rsre s-ib s-ii sbbs sbef sber sbse sbsi se-e se-f se-i se-s sebe sebi sebs seeb seef seem seer sees seff sefi seie seif seii seim seir seis seme semi sems serb sere serf seri serm serr sers sese sesi sess sfer sfmm sfss sibe sibi sibs sief sier sies sife siff sifr siim sime simi simm sims sire sirf siri sirr sirs sise sisi siss smbe smbf smeb smee smei smie smif smis smrf smss sreb srem sres srfi srib srim sris ssbr ssee ssem sses ssis ssri ssrm ssrs sssb sssf sssi sssm ssss