bbbb bbbs bbdd bbdo bbpr bbrc bcbc bcbp bcbs bccc bccs bcds bcor bcos bcpp bcps bcrs bcsc bcss bd-r bdbc bddc bdos bdpc bdsd bobb bobo bobs boco bocs bodb bodo bods boob booc bood boop boor boos bopp bops bor- bord boro borr bors bosc boso boss bpcp bprc bprd brcb brdo brds brob broc brod broo bror bros brrr brrs brsb brsr bsbd bscp bscs bsod bsos bspp bspr bsrd bssc bssd c-bo c-cd cbbc cbbs cbcc cbcp cbcr cbcs cbdb cbdc cbdo cbds cbpc cbpp cbrd cbsc ccbc cccb cccc cccp cccs ccdc ccdp ccdr ccds ccob ccoc ccod ccpp ccpr ccps ccrc ccrp ccrs ccsd ccsp ccss cd-r cdcs cddb cddr cdos cdps cdrs cdss cobb cobo cobs coco cocp codd cods coob cood coop coos copd copo copp copr cops cor- corb corc cord coro corp corr cors cosc coso cosp coss cpbc cpcs cpos cppd cpps cprs cpsc cpso cpsr crbc crcc crcr crdc crob croc crod croo crop cror crpc crps crsp crss cscb cscc cscd csco cscr cscs csdb csdp csdr csob csor csos cspb cspc cspd csps csrc csrd csrs cssd cssr d-bo dbcc dbcp dbcs dbos dbpc dbpd dbrs dbss dcbc dccb dccc dccp dccs dcdb dcds dcop dcos dcpo dcps dcsc dcss dddd ddoc ddpo ddps ddrc ddss dobb dobs doco docs dod- dodd dodo dods doob dood doop door doos dopo dopp dopr dops dorc dord doro dorp dorr dors doso doss dpbc dpcp dpos dppc dpsd drbc drob drod drop drrs drsp dsbc dscc dscp dscr dscs dsdp dsdr dsos dsps dsrc dsrp dsrr dssc dssp obbo obor obos obro obsd obsr obss ocbc occc ocds ocos ocpd ocpp ocro ocrr ocrs odbo oddd odds odoo odop odor odos odrp odso oocr oooo ooos oops oord opds opo- opor opos oppo opps orbb orbo orbs orco orcs ordo ords oro- oror oros orpc orps orro orrs orso osbp oscc osco osoo osor osos osrd osro ossb ossd osso pbcc pboc pbrs pbsp pcbc pcbs pccc pccs pcod pcos pcpb pcpp pcps pcrc pcrd pcso pdbs pdcp pdoc pdos pdpr pdrc pdrs pdsd pdss pobo pobs pocd poco pocs pod- podd podo pods pood poop poor poos pop- popc popo popp pops porb porc poro porr pors posb poso poss ppcc ppcd ppcs ppds ppod ppos pppd pppo pppp ppps pprc ppss prbc prbs prcc prcd prcp prcs pro- prob proc prod proo prop pros prpd prps prrd prrs prsc prsd prso prss psbd psbr psco psdc psdp psdr psds psoc psos pspp pspr psps psrd psrp pssc psso rbbb rbbr rbbs rbds rbsd rbsp rbss rcbc rcbo rccb rccc rccs rcdc rcds rcos rcpd rcpo rcps rcrd rcsc rcsd rcss rdbp rdoc rdos rdpc rdso rob- robb robo robs rocc roco rocs rodd rodo rods roob rood roop roor roos ropo rops rorc roro rosc roso rosp ross rpcs rpdp rpob rpos rpps rrrr rrsp rscc rscs rsdd rsds rsos rspb rspo rsps s-os sbbs sbcc sbcs sbds sbor sbsd sbsp sccc sccp sccs scdc scdp scds scob scoo scop scor scpb scpo scps scr- scrc scrs scsc scsd scso scsr sdcc sdco sddc sdds sdpr sdps sdrc sdrs sdsc sdss sobo sobp sobr sobs soco socr socs sodd sodo sods sood soop soor soos sopd sopo sopp sops sorb sord soro sorr sors soso soss spcc spco spcs spdc spdp spdr spoc spod spoo spop spor spos sppd spps sprd spro sprs spsd spso spsp spss srbc srcc sros srpc srps srsd srsp ssbr sscc sscp sscs ssdc ssdd ssdp ssoc ssop sspc sspo ssps ssrc ssrs sssb sssc ssss