bbbb bbbs bbci bbin bbrc bcbc bcbs bccc bcci bccs bcis bcit bcrs bcsc bcsn bcss bctc bcts bibb bibi bibs bicc bici bics biin biis bin- binc bini binn bins bint birb biri birn birr birs birt bis- bisc biss bist bitc bits bitt bnib bnin bnrr bnss brcb bric brin bris brit brns brrr brrs brsb brsr brst brtc bsci bscs bsic bsin bsns bssc bsts btcc btcs btrc btrt btss bttb cbbc cbbs cbcc cbcn cbcr cbcs cbct cbir cbit cbrn cbrt cbsc cbsi cbsn cbtc ccbc ccbn cccb cccc ccci cccs ccic ccii ccir ccis ccnb ccnc ccni ccnr ccns ccrc ccri ccrs ccrt ccsi ccsn ccss ccst cctb cctc cctt cibc cibi cicc cici cicr cics cict ciii ciis ciit cin- cinc cini cint cirb circ ciri cirr cirs cirt cis- cisc cisn cisr ciss cist citb citi cits citt cnbc cnci cnib cnic cnrc cnrr cnrt cnss cntc cntr crbc crcc crcr crib cric crin cris crit crns crrt crss crst crtc crts cscb cscc csci cscr cscs csib csir csis csit csrc csrs cssr cstc cstr csts ctbi ctbs ctic ctns ctrc ctrn ctrs ctsc ctsn ctss cttn ctts ibcs ibis ibns ibrc ibri ibsn ibss ibtb ibtc ibts icbc icbs iccb iccc icci iccn iccr iccs icct icis icnb icnc icns icrc icrr icrs icrt icsb icsc icsi icsr icss icst icts iiii iiis iiit iirc iirs iisc iisi iisr iist iitr iitt incb inci incr incs inis init inni innr inns inri inrs insc inss inst inti intn intr ints ircc ircs iri- iric irin iris irrc irri irrs irti irts isbn isbt iscc isci iscn iscr iscs isct isic isin isis isit isnt isri issc issi issr isss istc isti istr ists itbs itcs itic itin itis itri itrs itsi n-ii nbbc nbcc nbci nbcs nbic nbti ncbc ncbi ncbs nccc ncci nccn nccr nccs ncct ncis ncit ncnc ncrc ncri ncsc ncsi ncss ncst nctc nctr nibi nibs nicc nici nics niir niit nini nins nirs nirt nisi niss nist nitb nitc niti nitr nits nnit nnnn nnss nntn nrcs nric nrrc nrsc nrts nscc nscs nsic nsin nsis nsnr nsrc nssb nssc nssr nsss nstc nsts ntbc ntcc ntis ntrc ntsb ntsc ntss nttr rbbb rbbr rbbs rbis rbss rbst rcbc rccb rccc rccs rcic rcis rcnr rcsc rcsi rcss rctc rcti rcts rib- ribs ricc rics rict riin riis rinn riri rirs risc risi riss rist riti rits ritt rnbr rncs rnin rnnt rrrr rsbi rscc rscn rscs rsis rsnn rsnr rsts rtcc rtns rtss rtts s-ib s-ic s-ii sbbs sbcc sbcs sbct sbic sbsi sbst sbtc sbtn scbi sccc sccs scct sci- scic scin scir scis scit scnr scnt scr- scrc scri scrn scrs scsc scsi scsn scsr scst sctc sctn sctr scts sibc sibi sibs sicc sici sics siit sini sinn sins sint sirc siri sirr sirs sirt sisc sisi siss sist sit- sitc siti sitn sits sitt sncc snib snir snit snns snrs sntr srbc srcc srct srib sris srni srnn srtr ssbn ssbr sscc ssci sscs ssin ssis ssit ssns ssrc ssri ssrs sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stib stic stir stis stit stnn stnr stns strc stri strn strs stsi stss sttc sttr tbbs tbcb tbcc tbit tbrb tbst tcbs tccc tcnn tctc tcts tibi tibs ticc tics tiit tinc tini tinn tins tint tirb tiri tirr tirs tisb tisi tiss tist titc titi tits titt tnbc tncc tnts trcc tri- trib tric trin tris trit trsi trst trtc trtr tsbc tscc tsin tsis tssi tssr tsst tstc tsts ttbb ttcn ttss tttt