bbbb bbbs bbpr bbrc bcbc bcbp bcbs bccc bccs bcor bcos bcpp bcps bcrs bcsc bcsn bcss bnoc bnor bnpp bnrr bnss bobb bobo bobs boco bocs bonc bonn bono bons boob booc boon boop boor boos bopp bops bor- born boro borr bors bosc bosn boso boss bpcp bprc brcb brno brns brob broc bron broo bror bros brrr brrs brsb brsr bscp bscs bsns bson bsos bspp bspr bssc c-bo cbbc cbbs cbcc cbcn cbcp cbcr cbcs cbpc cbpp cbrn cbsc cbsn ccbc ccbn cccb cccc cccp cccs ccnb ccnc ccnp ccnr ccns ccob ccoc ccpn ccpp ccpr ccps ccrc ccrp ccrs ccsn ccsp ccss cnbc cnbp cnco cncp cnrc cnrr cnss cobb cobo cobs coco cocp con- conc conn cono cons coob coon coop coos copo copp copr cops cor- corb corc corn coro corp corr cors cosc coso cosp coss cpbc cpcs cpnb cpns cpos cpps cprs cpsc cpso cpsr crbc crcc crcr crns crob croc cron croo crop cror crpc crps crsp crss cscb cscc csco cscr cscs csnp csob csor csos cspb cspc csps csrc csrs cssr nbbc nbbo nbcc nbco nbcs nbpp nbps nbsp ncbc ncbs nccc nccn nccp nccr nccs ncnc ncoc ncor ncos ncpc ncrc ncrp ncsc ncss nnnn nnos nnpr nnss nobc nobo nobs noco nocs non- nonn nono nons noo- noob noon nooo noop noor noos nops nor- norb norc norn noro norr nors nos- noss npcc nppc npss nrcs nroc nron nrpc nrpn nrps nrrc nrsc nrsp nsbo nscc nscs nsnr nsos nspc nsps nsrc nssb nssc nsso nssp nssr nsss obbo obon obor obos obro obsn obsr obss ocbc occc occn ocon ocos ocpp ocro ocrr ocrs onc- onco onno onon onor onos onsc onso oocr oons oooo ooos oops opo- opon opor opos oppo opps orbb orbo orbs orco orcs ornc orno orns oro- oron oror oros orpc orps orro orrs orso osbp oscc osco osno osnr osoo osor osos osro ossb osso pbcc pboc pbrs pbsp pcbc pcbs pccc pccs pcns pcos pcpb pcpn pcpp pcps pcrc pcso pnon pnpo pnpp pnro pnsc pobo pobs poco pocs ponc pono ponp pons poon poop poor poos pop- popc popo popp pops porb porc porn poro porr pors posb posn poso poss ppcc ppcs ppos pppn pppo pppp ppps pprc ppss prbc prbs prcc prcp prcs prnp pro- prob proc pron proo prop pros prps prrs prsc prso prss psbr psco psnc psnr psoc pson psos pspp pspr psps psrp pssc psso rbbb rbbr rbbs rbsp rbss rcbc rcbo rccb rccc rccs rcnr rcon rcos rcpo rcps rcsc rcss rnbr rnco rncp rncs rnsp rob- robb robo robs rocc roco rocs ronc rono rons roob roon roop roor roos ropo rops rorc roro rosc roso rosp ross rpcs rpob rpon rpos rppn rpps rrrr rrsp rscc rscn rscs rsnn rsno rsnr rsos rspb rspo rsps s-os sbbs sbcc sbcs sbor sbsp sccc sccp sccs scnr scob scon scoo scop scor scpb scpo scps scr- scrc scrn scrs scsc scsn scso scsr sncc snco sncp snns snob snoc snoo snop snor snos snpo snpp snrs sobo sobp sobr sobs soco socr socs son- sono sons soon soop soor soos sopo sopp sops sorb sorn soro sorr sors soso soss spcc spco spcs spns spoc spon spoo spop spor spos spps spro sprs spso spsp spss srbc srcc srnn srno sros srpc srps srsp ssbn ssbr sscc sscp sscs ssns ssoc ssop sspc sspo ssps ssrc ssrs sssb sssc ssss