bbb bbc bbf bbo bbr bbs bbt bcb bcc bcf bco bcr bcs bct bfb bfc bff bfo bfr bfs bft bob boc bof boo bor bos bot brb brf bro brr brs brt bsb bsc bsf bso bsr bss bst btb btc btf bto btr bts btt c-- cbb cbc cbf cbo cbr cbs cbt ccb ccc ccf cco ccr ccs cct cfb cfc cff cfo cfr cfs cft co- cob coc cof coo cor cos cot crb crc crf cro crr crs crt csb csc csf cso csr css cst ctb ctc ctf cto ctr cts ctt fbb fbc fbf fbo fbr fbs fbt fcb fcc fcf fco fcr fcs fct ffc fff ffo ffr ffs fft fob foc fof foo for fos fot frb frc frf fro frr frs frt fsb fsc fsf fso fsr fss fst ftb ftc ftf fto ftr fts ftt ob- obb obc obf obo obr obs obt oc- ocb occ ocf oco ocr ocs oct of- ofb ofc off ofo ofr ofs oft oo- oob ooc oof ooo oor oos oot or- orb orc orf oro orr ors ort os- osb osc osf oso osr oss ost ot- otb otc otf oto otr ots ott rbb rbc rbf rbo rbr rbs rbt rcb rcc rcf rco rcr rcs rct rfb rfc rff rfo rfr rfs rft rob roc rof roo ror ros rot rrb rrc rrf rrr rrs rrt rsb rsc rsf rso rsr rss rst rtb rtc rtf rto rtr rts rtt sbb sbc sbf sbo sbr sbs sbt scb scc scf sco scr scs sct sfb sfc sff sfo sfr sfs sft sob soc sof soo sor sos sot sr- srb src srf sro srr srs srt ss- ssb ssc ssf sso ssr sss sst stb stc stf sto str sts stt tbb tbc tbf tbo tbr tbs tbt tcb tcc tcf tco tcr tcs tct tfb tfc tff tfo tfr tfs tft to- tob toc tof too tor tos tot trb trc trf tro trr trs trt tsb tsc tsf tso tsr tss tst ttb ttc ttf tto ttr tts ttt

bbbb bbbs bbfc bbrc bcbc bcbs bccc bccs bcfc bcof bcor bcos bcrs bcsc bcss bctc bcts bfcs bffs bfsr bfts bftt bobb bobo bobs boco bocs boff bofs boob booc boof boor boos boot bor- borf boro borr bors bort bosc boso boss bost botb boto bots bott brcb brfc brob broc broo bror bros brot brrr brrs brsb brsr brst brtc bscs bsfc bsff bsfs bsos bssc bsts btcc btcs btfc btob btor btrc btrt btss bttb c-bo cbbc cbbs cbcc cbcr cbcs cbct cbfb cbfc cbot cbrt cbsc cbtc cbtf ccbc cccb cccc cccf cccs ccfc ccff ccob ccoc ccrc ccrf ccrs ccrt ccsf ccss ccst cctb cctc cctt cfbc cfbr cfbs cfbt cfcb cfcf cfco cfcs cffb cffr cfor cfos cfrb cfrt cftc cftr cobb cobo cobs coco coct cofc coff cofs coft coob coof coos coot cor- corb corc corf coro corr cors cort cosc coso coss cost cotb cotc coto cots cott crbc crcc crcr crfc crfs crob croc croo cror crot crrt crss crst crtc crtf crts csbf cscb cscc cscf csco cscr cscs csfc csfr csob csor csos csot csrc csrs cssr cstc csto cstr csts ctbs ctcf ctfc ctfo ctfs ctor ctos ctot ctrc ctrs ctsc ctss ctts fbrs fcbs fccf fcot fcsc fcst fcto ffcc ffff ffrr ffss fftf fobs fobt foco focs fofo foof foos foot for- forb foro forr fors fort fosb foso foss fost foto fots fott frbc frcc frfc frob fros frot frsb frsc frso frst fscb fscc fsfo fssc fssf ft-c ftfc ftos ftrs ftsr obbo obor obos obot obro obsr obss obst obts ocbc occc occt ocos ocro ocrr ocrs oct- octo octs ofcr off- offc offo offr offs ofor ofst oocr ooff oofs oooo ooos oort oost ootb oots orbb orbo orbs orco orcs orff orfs oro- orof oror oros orot orro orrs orso ortc orto orts oscc osco osoo osor osos osro ossb osso ostc ostr osts otbs otfc oto- otof otoo otor otos otro otrs otso otto otts rbbb rbbr rbbs rbss rbst rcbc rcbo rccb rccc rccs rcfc rcos rcsc rcss rctc rcts rffc rftc rob- robb robo robs robt rocc roco rocs rofc roff rofo roob roof roor roos root rorc roro rort rosc roso ross rost rotc roto rotr rots rott rrfc rrrr rscc rscs rsfc rsos rsts rtbf rtcc rtfb rtfc rtss rtts s-os sbbs sbcc sbcs sbct sbfc sbor sbot sbst sbtc sccc sccs scct scfc scob scoo scor scot scr- scrc scrs scsc scso scsr scst sctc scto sctr scts sfbc sfcc sfco sfcs sffc sfor sfos sfrc sfro sfss sfts sobo sobr sobs sobt soco socr socs sofo soft soof soor soos soot sorb soro sorr sors sort soso soss sost sotc soto sots srbc srcc srct srfc sros srtr ssbr sscc sscs ssfc ssoc ssot ssrc ssrs sssb sssc sssf ssss sstb sstc ssts stbc stbs stcc stcs stfc stob stof stoo stor stos stot strc stro strs stsf stss sttc sttr tbbs tbcb tbcc tbrb tbst tcbs tccc tcfc tcos tctc tcts tfot tfrs tfss tftc tobo tobs tobt toco toff tofo toft toof toor toos toot torc torf toro torr tors tort tosb tosc toso toss tost totc toto totr tots tott trcc trfc trfr troc troo tros trot trst trtc trtr tsbc tscc tsfc tsob tsos tssf tssr tsst tstc tsts ttbb ttfc ttff ttss tttt

bbsrc bcbst bo-bo boboc bobos bobr bobst bobts bocor boffo boffs boobs booco boofs boors boort boost boots borbo borcs boro- boroo boros borot borro borst borts bosco boscs bosor bosso botos botro botts brobo brobs broft broos bross broto brrrr bscco bsoft btr-t btrfs c-cor c-fos ccccc co-bo co-co cobbs cobot cocc- cocco cocos cocto coffs coofs coors coost coots corbo corfo coro- corot corrs corso corss corto corts cos-b cosco cost- costo costs cotos cotso cott- cotto cotts croco crocs