-ism bbbb bbbs bbpr bibb bibi bibs biis bims bipm bipp bips birb biri birr birs bis- bisp biss bmir bmmi bpms brim bris brrm brrr brrs brsb brsr bsim bsms bspp bspr bsrm bssm ibbm ibim ibis ibmp ibms ibri ibss iiii iiis iipm iirs iisi iism iisp iisr imbi imir immi imms impi impr imps imri imrr imsi imsp imsr imss ipmi ipmp ipms ippr ipri ipsi ipsp ipss irbm irbp iri- irip iris irms irps irri irrs irsp isim isis ismi isms ispr isps isri isrp issi issp issr isss mbbs mbim mbis mbms mbps mbrs mibs miii miis mim- mimi mimp mims mipi mipr mips miri mirr mirs mis- misi misr miss mmii mmis mmmm mmms mmpi mmpr mmrp mpir mppp mpps mpri mprp mrbb mrbm mrbs mris mrps mrsi msmb msmm msms mspb mspi mspp msrb msrp mssi mssm mssp mssr pbmr pbrs pbsp pibb pibi piip pimi pimp pims pipi pipp pips piri pirr pirs pisi piss pmbr pmip pmmp pmpm pmrs ppib ppms pppp ppps pprm ppss prbs pri- prii prim pris prps prri prrm prrs prsi prss psbr psim psip psis pspi pspp pspr psps psrp pssm rbbb rbbr rbbs rbis rbms rbsp rbss rib- ribs riis rimi rimm rims ripi ripp ripr rips riri rirs risi rism risp riss rmbs rmrp rmsp rpii rpms rpps rrmp rrrr rrsp rsbi rsis rspb rsps s-ib s-ii sbbs sbsi sbsp sibi sibs siim simi simm simp sims sipi sipp sips siri sirp sirr sirs sisi siss smis smps smsp smss spib spim spip spir spis spmi spms spps spri sprm sprs spsp spss srib srim sris srps srsp ssbr ssis ssps ssri ssrm ssrs sssb sssi sssm ssss