bbbb bbbs bbci bbpr bbrc bcbc bcbp bcbs bccc bcci bccs bcis bcpp bcps bcrs bcsc bcss bibb bibi bibs bicc bici bics biis bipp bips birb biri birr birs bis- bisc bisp biss bpcp bprc brcb bric bris brrr brrs brsb brsr bsci bscp bscs bsic bspp bspr bssc cbbc cbbs cbcc cbcp cbcr cbcs cbir cbpc cbpp cbsc cbsi ccbc cccb cccc ccci cccp cccs ccic ccii ccip ccir ccis ccpp ccpr ccps ccrc ccri ccrp ccrs ccsi ccsp ccss cibc cibi cicc cici cicr cics ciii ciis cipp cips cirb circ ciri cirr cirs cis- cisc cisp cisr ciss cpbc cpcs cpic cpps cpri cprs cpsc cpsr crbc crcc crcr crib cric crip cris crpc crps crsp crss cscb cscc csci cscr cscs csib csir csis cspb cspc cspi csps csrc csrs cssr ibcs ibis ibrc ibri ibss icbc icbp icbs iccb iccc icci iccp iccr iccs icis icpc icps icrc icrr icrs icsb icsc icsi icsp icsr icss iiii iiis iirc iirs iisc iisi iisp iisr ipcc ipcs ippc ippr ipri ipsc ipsi ipsp ipss irbp ircc ircs iri- iric irip iris irpc irps irrc irri irrs irsp iscc isci iscp iscr iscs isic isis ispc ispr isps isri isrp issc issi issp issr isss pbcc pbrs pbsp pcbc pcbs pccc pccs pcip pcpb pcpp pcps pcrc pibb pibi picc pici picr pics piip pipi pipp pips pirc piri pirr pirs pisi piss ppcc ppci ppcs ppib ppic pppp ppps pprc ppss prbc prbs prcc prcp prcs pri- prii pris prps prri prrs prsc prsi prss psbr psci psip psis pspi pspp pspr psps psrp pssc rbbb rbbr rbbs rbis rbsp rbss rcbc rccb rccc rccs rcic rcis rcpi rcps rcsc rcsi rcss rib- ribs ricc rics riis ripi ripp ripr rips riri rirs risc risi risp riss rpcs rpii rpps rrrr rrsp rsbi rscc rscs rsis rspb rsps s-ib s-ic s-ii sbbs sbcc sbcs sbic sbsi sbsp scbi sccc sccp sccs sci- scic scip scir scis scpb scpi scps scr- scrc scri scrs scsc scsi scsr sibc sibi sibs sicc sici sicp sics sipc sipi sipp sips sirc siri sirp sirr sirs sisc sisi siss spcc spcs spib spic spip spir spis spps spri sprs spsp spss srbc srcc srib sris srpc srps srsp ssbr sscc ssci sscp sscs ssis sspc ssps ssrc ssri ssrs sssb sssc sssi ssss