bbb bbc bbd bbn bbo bbr bbs bbt bcb bcc bcd bcn bco bcr bcs bct bdb bdc bdd bdo bdr bds bdt bnb bnc bnd bnn bno bnr bns bnt bob boc bod bon boo bor bos bot brb brd brn bro brr brs brt bsb bsc bsd bsn bso bsr bss bst btb btc btd btn bto btr bts btt c-- cbb cbc cbd cbn cbo cbr cbs cbt ccb ccc ccd ccn cco ccr ccs cct cdb cdc cdd cdn cdo cdr cds cdt cn- cnb cnc cnd cnn cno cnr cns cnt co- cob coc cod con coo cor cos cot crb crc crd crn cro crr crs crt csb csc csd csn cso csr css cst ctb ctc ctd ctn cto ctr cts ctt dbb dbc dbd dbn dbo dbr dbs dbt dcb dcc dcd dcn dco dcr dcs dct ddb ddc ddd ddn ddo ddr dds ddt dnb dnc dnd dnn dno dnr dns dnt dob doc dod don doo dor dos dot drb drc drd drn dro drr drs drt dsb dsc dsd dsn dso dsr dss dst dtb dtc dtd dtn dto dtr dts dtt nbb nbc nbd nbn nbo nbr nbs nbt ncb ncc ncd ncn nco ncr ncs nct ndb ndc ndd ndn ndo ndr nds ndt nnb nnc nnn nno nns nnt no- nob noc nod non noo nor nos not nrb nrc nrd nrn nro nrr nrs nrt nsb nsc nsd nsn nso nsr nss nst ntb ntc ntd ntn nto ntr nts ntt ob- obb obc obd obn obo obr obs obt oc- ocb occ ocd ocn oco ocr ocs oct odb odc odd odn odo odr ods odt on- onb onc ond onn ono onr ons ont oo- oob ooc ood oon ooo oor oos oot or- orb orc ord orn oro orr ors ort os- osb osc osd osn oso osr oss ost ot- otb otc otd otn oto otr ots ott rbb rbc rbd rbn rbo rbr rbs rbt rcb rcc rcd rcn rco rcr rcs rct rdb rdc rdd rdn rdo rdr rds rdt rnb rnc rnd rnn rno rnr rns rnt rob roc rod ron roo ror ros rot rrb rrc rrd rrn rrr rrs rrt rsb rsc rsd rsn rso rsr rss rst rtb rtc rtd rtn rto rtr rts rtt sbb sbc sbd sbn sbo sbr sbs sbt scb scc scd scn sco scr scs sct sdb sdc sdd sdn sdo sdr sds sdt snb snc snd snn sno snr sns snt sob soc sod son soo sor sos sot sr- srb src srd srn sro srr srs srt ss- ssb ssc ssd ssn sso ssr sss sst stb stc std stn sto str sts stt tbb tbc tbd tbn tbo tbr tbs tbt tcb tcc tcd tcn tco tcr tcs tct tdb tdc tdd tdn tdo tdr tds tdt tnb tnc tnd tnn tno tnr tns tnt to- tob toc tod ton too tor tos tot trb trc trd trn tro trr trs trt tsb tsc tsd tsn tso tsr tss tst ttb ttc ttd ttn tto ttr tts ttt

bbbb bbbs bbdd bbdo bbrc bcbc bcbs bccc bccs bcds bcor bcos bcrs bcsc bcsn bcss bctc bcts bd-r bdbc bddc bdos bdsd bnoc bnor bnrr bnss bobb bobo bobs boco bocs bodb bodo bods bonc bond bonn bono bons bont boob booc bood boon boor boos boot bor- bord born boro borr bors bort bosc bosn boso boss bost botb botd botn boto bots bott brcb brdo brds brdt brno brns brob broc brod bron broo bror bros brot brrr brrs brsb brsr brst brtc bsbd bscs bsnd bsns bsod bson bsos bsrd bssc bssd bsts btcc btcs btdt btob btor btrc btrt btss bttb c-bo c-cd cbbc cbbs cbcc cbcn cbcr cbcs cbct cbdb cbdc cbdn cbdo cbds cbnd cbot cbrd cbrn cbrt cbsc cbsn cbtc ccbc ccbn cccb cccc cccs ccdc ccdn ccdr ccds ccnb ccnc ccnr ccns ccob ccoc ccod ccrc ccrs ccrt ccsd ccsn ccss ccst cctb cctc cctt cd-r cdcs cddb cddr cdnb cdnc cdon cdos cdot cdrs cdss cnbc cnco cndd cnrc cnrr cnrt cnss cntc cntr cobb cobo cobs coco coct codd cods con- conc cond conn cono cons cont coob cood coon coos coot cor- corb corc cord corn coro corr cors cort cosc coso coss cost cotb cotc cotn coto cots cott crbc crcc crcr crdc crns crob croc crod cron croo cror crot crrt crss crst crtc crts cscb cscc cscd csco cscr cscs csdb csdn csdr csob csor csos csot csrc csrd csrs cssd cssr cstc cstd csto cstr csts ctbs ctns ctor ctos ctot ctrc ctrn ctrs ctsc ctsn ctss cttn ctts d-bo dbcc dbcs dbos dbrn dbrs dbss dbtt dcbc dccb dccc dccs dcct dcdb dcds dcns dcon dcos dcsc dcss dctc dcts dddd ddoc ddot ddrc ddss ddts dncs dnoc dnrc dnsc dntt dobb dobs doco docs doct dod- dodd dodo dods donc dond donn dono donr dons dont doob dood doon door doos doot dorc dord dorn doro dorr dors dort doso doss dost dotd doto dots dott drbc drno drob drod dron drot drrs dsbc dscc dscn dscr dscs dsdr dsos dsrc dsrr dssc dssn dsst dstc dstn dsto dsts dtcc dtnb dtor dtot dtss nbbc nbbo nbcc nbco nbcs ncbc ncbs nccc nccn nccr nccs ncct ncdc ncdn ncdr ncds ncnc ncnd ncoc ncor ncos ncrc ncsc ncss ncst nctc nctr ndcc ndcs nddb nddo ndnt ndoc ndor ndos ndrc ndss ndtc nndb nnnn nnos nnot nnss nntn nobc nobo nobs noco nocs noct nodo nods non- nonn nono nons nont noo- noob noon nooo noor noos noot nor- norb norc nord norn noro norr nors nort nos- noss nost not- noto nots nott nrcs nrdc nrds nroc nron nrrc nrrd nrsc nrts nsbo nscc nscd nscs nsds nsdt nsnr nsos nsrc nsrd nssb nssc nsso nssr nsss nstc nstd nsts ntbc ntcc ntds ntnd ntrc ntsb ntsc ntss ntto nttr