-ic bbb bbc bbi bbm bbr bbs bbt bcb bcc bci bcm bcr bcs bct bi- bib bic bii bim bir bis bit bmb bmc bmi bmm bmr bms bmt brb bri brm brr brs brt bsb bsc bsi bsm bsr bss bst btb btc bti btm btr bts btt c-- cbb cbc cbi cbm cbr cbs cbt ccb ccc cci ccm ccr ccs cct ci- cib cic cii cim cir cis cit cmb cmc cmi cmm cmr cms cmt crb crc cri crm crr crs crt csb csc csi csm csr css cst ctb ctc cti ctm ctr cts ctt ibb ibc ibi ibm ibr ibs ibt icb icc ici icm icr ics ict iib iic iii iim iir iis iit im- imb imc imi imm ims imt ir- irb irc iri irm irr irs irt is- isb isc isi ism isr iss ist itb itc iti itm its itt m-r mbb mbc mbi mbm mbr mbs mbt mc- mcb mcc mci mcm mcr mcs mct mi- mib mic mii mim mir mis mit mmb mmc mmi mmm mmr mms mmt mrb mrc mri mrm mrr mrs mrt msb msc msi msm msr mss mst mtb mtc mti mtm mtr mts mtt rbb rbc rbi rbm rbr rbs rbt rcb rcc rci rcm rcr rcs rct rib ric rii rim rir ris rit rmb rmc rmi rmm rmr rms rmt rrb rrc rri rrm rrr rrs rrt rsb rsc rsi rsm rsr rss rst rtb rtc rti rtm rtr rts rtt sbb sbc sbi sbm sbr sbs sbt scb scc sci scm scr scs sct sib sic sii sim sir sis sit smb smc smi smm smr sms smt sr- srb src sri srm srr srs srt ss- ssb ssc ssi ssm ssr sss sst stb stc sti stm str sts stt tbb tbc tbi tbm tbr tbs tbt tcb tcc tci tcm tcr tcs tct tib tic tii tim tir tis tit tmb tmc tmi tmm tmr tms tmt trb trc tri trm trr trs trt tsb tsc tsi tsm tsr tss tst ttb ttc tti ttm ttr tts ttt

-ism bbbb bbbs bbci bbcm bbrc bcbc bcbs bccc bcci bccm bccs bcis bcit bcms bcrs bcsc bcsm bcss bctc bcts bibb bibi bibs bicc bici bics biis bims birb biri birr birs birt bis- bisc biss bist bitc bits bitt bmci bmic bmir bmmi bmtc bmts brcb bric brim bris brit brmc brrm brrr brrs brsb brsr brst brtc bsci bscs bsic bsim bsms bsmt bsrm bssc bssm bsts btcc btcs btrc btrt btss bttb cbbc cbbs cbcc cbcm cbcr cbcs cbct cbir cbit cbms cbrm cbrt cbsc cbsi cbsm cbtc ccbc cccb cccc ccci cccm cccs ccic ccii ccim ccir ccis ccmb ccmc ccmm ccms ccrc ccri ccrs ccrt ccsi ccss ccst cctb cctc cctt cibc cibi cicc cici cicr cics cict ciii ciis ciit cimb cimi cimm cimr cims cirb circ ciri cirm cirr cirs cirt cis- cisc cism cisr ciss cist citb citi cits citt cmbc cmbs cmcc cmcs cmii cmir cmmb cmmc cmmi cmms cmri cmrr cmrs cmsc cmst cmtc crbc crcc crcr crib cric crim cris crit crmb crms crrt crss crst crtc crtm crts csbm cscb cscc csci cscr cscs csib csir csis csit csmc csrc csrs cssm cssr cstc cstm cstr csts ctbi ctbs ctic ctrc ctrm ctrs ctsc ctss ctts ibbm ibcs ibim ibis ibms ibrc ibri ibss ibtb ibtc ibts icbc icbm icbs iccb iccc icci iccr iccs icct icis icmc icmi icmm icms icmt icrc icrm icrr icrs icrt icsb icsc icsi icsr icss icst icts iiii iiis iiit iimc iirc iirs iisc iisi iism iisr iist iitm iitr iitt imbi imcb imci imcs imir imit immi imms immt imrc imri imrr imsc imsi imsr imss imst imts irbm ircc ircs iri- iric iris irmc irms irrc irri irrs irti irts isbt iscc isci iscr iscs isct isic isim isis isit ismc ismi isms isri issc issi issr isss istc isti istr ists itbs itcm itcs itic itim itis itms itri itrs itsi mbbs mbci mbcs mbim mbis mbms mbrs mcbc mcbi mccc mcci mcic mcii mcit mcmc mcmi mcmt mcrc mcri mcss mcst mctc mcts mibc mibs micc mici micr mics mict miii miis miit mim- mimi mims mirc miri mirr mirs mirt mis- misc misi misr miss mist mit- mitb mitc miti mitm mits mitt mmcc mmci mmcm mmcs mmct mmic mmii mmis mmmc mmmm mmms mmrc mmsc mmst mmts mr-c mrbb mrbm mrbs mrcb mrcc mrcs mris mrmc mrrc mrsc mrsi mrtm mrts mrtt mscc msci msic msmb msmc msmm msms msrb msrt mssi mssm mssr msst mstc mstr msts mtbc mtbs mtcr mtrc mtrr mtss mtst mttr mtts rbbb rbbr rbbs rbis rbms rbss rbst rcbc rccb rccc rccs rcic rcis rcms rcsc rcsi rcss rctc rcti rcts rib- ribs ricc rics rict riis rimi rimm rims riri rirs risc risi rism riss rist riti rits ritt rmbs rmsc rmst rrmc rrrr rsbi rscc rscs rsis rsts rtcc rtcm rtmc rtmi rtms rtss rtts s-ib s-ic s-ii sbbs sbcc sbcs sbct sbic sbmc sbsi sbst sbtc scbi sccc sccm sccs scct sci- scic scim scir scis scit scmc scmm scms scr- scrc scri scrs scsc scsi scsr scst sctc sctr scts sibc sibi sibs sicc sici sicm sics siim siit simi simm sims simt sirc siri sirr sirs sirt sisc sisi siss sist sit- sitc siti sits sitt smbc smcc smic smis smit smrt smsc smss smtc smti srbc srcc srct srib srim sris srmc srtr ssbr sscc ssci sscs ssis ssit ssmc ssrc ssri ssrm ssrs sssb sssc sssi sssm ssss sstb sstc ssts stbc stbs stcc stcs stib stic stim stir stis stit stmc stms stmt strc stri strs stsi stsm stss sttc sttr tbbs tbcb tbcc tbit tbrb tbst tcbs tccc tctc tcts tibi tibs ticc tics tiit timi timm tims tirb tiri tirr tirs tisb tisi tism tiss tist titc titi tits titt tmbc tmbr tmcc tmcm tmsc tmsi