b-p bbb bbc bbo bbp bbr bbs bbt bcb bcc bco bcp bcr bcs bct bob boc boo bop bor bos bot bpb bpc bpo bpp bpr bps bpt brb bro brp brr brs brt bsb bsc bso bsp bsr bss bst btb btc bto btp btr bts btt c-- cbb cbc cbo cbp cbr cbs cbt ccb ccc cco ccp ccr ccs cct co- cob coc coo cop cor cos cot cpb cpc cpo cpp cpr cps cpt crb crc cro crp crr crs crt csb csc cso csp csr css cst ctb ctc cto ctp ctr cts ctt ob- obb obc obo obp obr obs obt oc- ocb occ oco ocp ocr ocs oct oo- oob ooc ooo oop oor oos oot op- opb opc opo opp opr ops opt or- orb orc oro orp orr ors ort os- osb osc oso osp osr oss ost ot- otb otc oto otp otr ots ott p-p pbb pbc pbo pbp pbr pbs pbt pcb pcc pco pcp pcr pcs pct pob poc poo pop por pos pot ppb ppc ppo ppp ppr pps ppt prb prc pro prp prr prs prt ps- psb psc pso psp psr pss pst pt- ptb ptc pto ptp ptr pts ptt rbb rbc rbo rbp rbr rbs rbt rcb rcc rco rcp rcr rcs rct rob roc roo rop ror ros rot rpb rpc rpo rpp rpr rps rpt rrb rrc rrp rrr rrs rrt rsb rsc rso rsp rsr rss rst rtb rtc rto rtp rtr rts rtt sbb sbc sbo sbp sbr sbs sbt scb scc sco scp scr scs sct sob soc soo sop sor sos sot spb spc spo spp spr sps spt sr- srb src sro srp srr srs srt ss- ssb ssc sso ssp ssr sss sst stb stc sto stp str sts stt tbb tbc tbo tbp tbr tbs tbt tcb tcc tco tcp tcr tcs tct to- tob toc too top tor tos tot tpb tpc tpo tpp tpr tps tpt trb trc tro trp trr trs trt tsb tsc tso tsp tsr tss tst ttb ttc tto ttp ttr tts ttt

bbbb bbbs bbpr bbrc bcbc bcbp bcbs bccc bccs bcor bcos bcpp bcps bcrs bcsc bcss bctc bcts bobb bobo bobs boco bocs boob booc boop boor boos boot bopp bops bor- boro borr bors bort bosc boso boss bost botb boto bots bott bpcp bpot bprc brcb brob broc broo bror bros brot brrr brrs brsb brsr brst brtc bscp bscs bsos bspp bspr bssc bsts btbp btcc btcs btob btor btps btrc btrt btss bttb c-bo cbbc cbbs cbcc cbcp cbcr cbcs cbct cbot cbpc cbpp cbrt cbsc cbtc ccbc cccb cccc cccp cccs ccob ccoc ccpp ccpr ccps ccrc ccrp ccrs ccrt ccsp ccss ccst cctb cctc cctt cobb cobo cobs coco cocp coct coob coop coos coot copo copp copr cops copt cor- corb corc coro corp corr cors cort cosc coso cosp coss cost cotb cotc coto cots cott cpbc cpcs cpos cpps cprs cprt cpsc cpso cpsr cptp cptr cpts crbc crcc crcr crob croc croo crop cror crot crpc crps crrt crsp crss crst crtc crtp crts cscb cscc csco cscr cscs csob csor csos csot cspb cspc csps cspt csrc csrs cssr cstc csto cstr csts ctbs ctcp ctor ctos ctot ctpo ctpp ctps ctrc ctrp ctrs ctsc ctss ctts obbo obor obos obot obro obsr obss obst obts ocbc occc occt ocos ocpp ocro ocrr ocrs oct- octo octs oocr oooo ooos oops oort oost ootb ootp oots opo- opor opos oppo opps opto opts orbb orbo orbs orco orcs oro- oror oros orot orpc orps orro orrs orso ortc orto orts osbp oscc osco osoo osor osos osro ossb osso ostc ostr osts otbs oto- otoo otor otos otpp otro otrs otso otto otts pbcc pboc pbrs pbsp pcbc pcbs pccc pccs pcos pcpb pcpp pcps pcrc pcso pcts pobo pobs poco pocs poop poor poos poot pop- popc popo popp pops popt porb porc poro porr pors port posb poso poss post potc poto pots pott ppcc ppcs ppos pppo pppp ppps pprc ppss ppts pptt prbc prbs prcc prcp prcs pro- prob proc proo prop pros prot prps prrs prsc prso prss prtc prtp prtr psbr psbt psco psoc psos pspp pspr psps psrp pssc psso psst psts ptcc ptop pttc rbbb rbbr rbbs rbsp rbss rbst rcbc rcbo rccb rccc rccs rcos rcpo rcps rcpt rcsc rcss rctc rcts rob- robb robo robs robt rocc roco rocs roob roop roor roos root ropo rops rorc roro rort rosc roso rosp ross rost rotc roto rotr rots rott rpcs rpob rpos rpps rpts rrrr rrsp rscc rscs rsos rspb rspo rsps rstp rsts rtcc rtps rtss rttp rtts s-os sbbs sbcc sbcs sbct sbor sbot sbsp sbst sbtc sccc sccp sccs scct scob scoo scop scor scot scpb scpo scps scpt scr- scrc scrs scsc scso scsr scst sctc scto sctr scts sobo sobp sobr sobs sobt soco socr socs soop soor soos soot sopo sopp sops sorb soro sorr sors sort soso soss sost sotc soto sotp sots spcc spco spcs spoc spoo spop spor spos spot spps spro sprs spso spsp spss spst sptb sptc spto sptr spts srbc srcc srct sros srpc srps srpt srsp srtp srtr ssbr sscc sscp sscs ssoc ssop ssot sspc sspo ssps sspt ssrc ssrs sssb sssc ssss sstb sstc sstp ssts stbc stbs stcc stcp stcs stob stoo stop stor stos stot stpp stps strc stro strs stss sttc sttr tbbs tbcb tbcc tbrb tbsp tbst tbtp tcbs tccc tcos tcpo tctc tcts tobo tobs tobt toco toor toos toot top- topo topp tops topt torc toro torp torr tors tort tosb tosc toso toss tost totc toto totr tots tott tpcp tpcs tppp tppr tprs tpsc tptp tptr trcc troc troo trop tros trot trpc trpp trps trst trtc trtr tsbc tscc tscp tsob tsop tsos tspo tsps tspt tssr tsst