bbbb bbbs bbci bbdd bbpr bbrc bcbc bcbp bcbs bccc bcci bccs bcds bcis bcpp bcps bcrs bcsc bcss bd-r bdbc bddc bdii bdpc bdsd bibb bibi bibs bicc bici bics bidi bidr bids biis bipp bips birb bird biri birr birs bis- bisc bisd bisp biss bpcp bprc bprd brcb brds bric brid bris brrr brrs brsb brsr bsbd bsci bscp bscs bsic bspp bspr bsrd bssc bssd c-cd cbbc cbbs cbcc cbcp cbcr cbcs cbdb cbdc cbdi cbds cbid cbir cbpc cbpp cbrd cbsc cbsi ccbc cccb cccc ccci cccp cccs ccdc ccdi ccdp ccdr ccds ccic ccid ccii ccip ccir ccis ccpp ccpr ccps ccrc ccri ccrp ccrs ccsd ccsi ccsp ccss cd-r cdcs cddb cddr cdic cdii cdis cdps cdrs cdss cibc cibi cicc cici cicr cics cidc cidi cidp cidr cids ciid ciii ciis cipp cips cirb circ ciri cirr cirs cis- cisc cisd cisp cisr ciss cpbc cpcs cpic cppd cpps cpri cprs cpsc cpsr crbc crcc crcr crdc crib cric crip cris crpc crps crsp crss cscb cscc cscd csci cscr cscs csdb csdp csdr csib csid csir csis cspb cspc cspd cspi csps csrc csrd csrs cssd cssr dbcc dbcp dbcs dbpc dbpd dbrs dbss dcbc dccb dccc dcci dccp dccs dcdb dcds dcii dcis dcps dcsc dcss dddd ddps ddrc ddss dibb dibp dibs dici didi dids diii diis dipc dipp dips dird dirr dirs dis- disc disd disi disp diss dpbc dpci dpcp dppc dpsd drbc drib dric drip drrs drsp dsbc dscc dscp dscr dscs dsdp dsdr dsip dsps dsrc dsri dsrp dsrr dssc dssi dssp ibcs ibid ibis ibrc ibrd ibri ibss icbc icbd icbp icbs iccb iccc icci iccp iccr iccs icdc icdd icdp icis icpc icpd icps icrc icrr icrs icsb icsc icsd icsi icsp icsr icss idcr idic idid idir idis idps idrc idsc idss iicd iiii iiis iirc iirs iisc iisd iisi iisp iisr ipcc ipcs ipdc ipdi ipid ippc ippr ipri ipsc ipsi ipsp ipss irbp ircc ircd ircs irdc irdp irds iri- iric irid irip iris irpc irps irrc irri irrs irsp isbd iscc iscd isci iscp iscr iscs isdb isdc isds isic isis ispc ispr isps isri isrp issc issi issp issr isss pbcc pbrs pbsp pcbc pcbs pccc pccs pcip pcpb pcpp pcps pcrc pcrd pdbs pdci pdcp pdic pdpr pdrc pdrs pdsd pdss pibb pibi picc pici picr pics pids piip pipi pipp pips pirc piri pirr pirs pisd pisi piss ppcc ppcd ppci ppcs ppds ppib ppic ppid pppd pppp ppps pprc ppss prbc prbs prcc prcd prcp prcs pri- prid prii pris prpd prps prrd prri prrs prsc prsd prsi prss psbd psbr psci psdc psdi psdp psdr psds psid psip psis pspi pspp pspr psps psrd psrp pssc rbbb rbbr rbbs rbds rbis rbsd rbsp rbss rcbc rccb rccc rccs rcdc rcds rcic rcid rcis rcpd rcpi rcps rcrd rcsc rcsd rcsi rcss rdbp rdpc rib- ribs ricc rics ridc ridd ridi rids riis ripd ripi ripp ripr rips riri rirs risc risd risi risp riss rpcs rpdp rpii rpps rrrr rrsp rsbi rscc rscs rsdd rsds rsid rsis rspb rsps s-ib s-ic s-ii sbbs sbcc sbcs sbds sbic sbsd sbsi sbsp scbi sccc sccp sccs scdc scdp scds sci- scic scid scip scir scis scpb scpi scps scr- scrc scri scrs scsc scsd scsi scsr sdcc sddc sdds sdib sdic sdpr sdps sdrc sdrs sdsc sdss sibc sibi sibs sicc sici sicp sics sidd sidi sidr sids sipc sipi sipp sips sirc siri sirp sirr sirs sisc sisd sisi siss spcc spcs spdc spdp spdr spib spic spip spir spis sppd spps sprd spri sprs spsd spsp spss srbc srcc srib sris srpc srps srsd srsp ssbr sscc ssci sscp sscs ssdc ssdd ssdp ssid ssis sspc ssps ssrc ssri ssrs sssb sssc sssi ssss