bbbb bbbs bbdd bbdo bbpr bd-r bdos bdsd bkpr bksp bobb bobo bobs bodb bodo bods boko boks boob bood book boop boor boos bopp bops bor- bord bork boro borr bors bosk boso boss bprd brdo brds brkb brob brod brok broo bror bros brrr brrs brsb brsr bsbd bsod bsos bspp bspr bsrd bssd d-bo dbos dbpd dbrs dbss dddd ddpo ddps ddss dobb dobs dod- dodd dodo dods doko doob dood dook doop door doos dopo dopp dopr dops dord dork doro dorp dorr dors dosk doso doss dpos dprk dpsd drob drod drop drrs drsp dsdp dsdr dsos dsps dsrp dsrr dssp k-os kbbb kbbd kbbk kbbo kbbr kbbs kbdb kbdo kbdr kbds kbkb kbkk kbko kbkr kbob kbod kbok kboo kbos kbpk kbpo kbpr kbps kbrb kbrd kbrk kbro kbsb kbsk kbso kbsr kbss kdbb kdbr kdbs kddb kddd kddk kddr kdkb kdkd kdkk kdko kdkr kdok kdpr kdps kdrb kdro kdrs kdsd kdsk kdsp kdsr kdss kkbb kkbd kkbo kkbr kkbs kkdd kkdo kkkk kkob kkoo kkor kkpk kkps kkrb kkrk kkro kkrr kkrs kksd kksp kksr kkss kobb kobk kobo kobr kobs kodk kodo kods kokb kokk koko kokp kokr koks koob kook kooo koop koor koos kopb kopp kopr kops korb kord kork koro korr kors kos- kosb kosd koso kosp kosr koss kpbb kpbd kpbr kpbs kpdb kpdo kpdr kpkk kpkr kpob kpod kpok kpoo kpop kppd kppk kppo kppp kppr kprb kprd kprk kpro kprp kprr kprs kpsd kpso kpsp krbb krbd krbk krbr krdd krdo krdr krds krkd krkk krko krkr krks krob krod krok kroo krop kror kros krpr krps krrb krrk krro krrr krrs krsd krsk krsr krss ksbp ksbr ksbs ksdk ksdp ksdr ksds kskb kskd kskk ksko kskr ksks ksob ksok ksoo ksop ksor ksos kspb kspd kspk kspo kspr ksps ksrb ksro ksrp ksrr ksrs ksso kssr ksss obbo obkb obok obor obos obro obsd obsr obss odbo oddd odds odoo odop odor odos odrp odso okko okok okor okpo okro okso oooo ooos oops oord opds opo- opor opos oppo opps orbb orbo orbs ordo ords orko oro- orok oror oros orps orro orrs orsk orso osbp osoo osor osos osrd osro ossb ossd osso pbpk pbrs pbsp pdbs pdos pdpr pdrs pdsd pdss pobo pobs pod- podd podo pods poko pood pook poop poor poos pop- popo popp pops porb pork poro porr pors posb posk poso poss ppdk ppds ppod ppos pppd pppo pppp ppps ppss prbs pro- prob prod proo prop pros prpd prps prrd prrs prsd prso prss psbd psbr psdp psdr psds psos pspp pspr psps psrd psrk psrp psso rbbb rbbr rbbs rbds rbsd rbsp rbss rdbp rdos rdso rkos rkss rob- robb robo robs rodd rodo rods rokk roko rokr roks roob rood rook roop roor roos ropo rops rork roro roso rosp ross rpdp rpob rpos rpps rrrr rrsp rsdd rsds rsos rspb rspk rspo rsps s-os sbbs sbds sbor sbrk sbsd sbsp sdds sdpr sdps sdrs sdss skop skor skpo sksd skss sobo sobp sobr sobs sodd sodo sods sokk soko sood sook soop soor soos sopd sopo sopp sops sorb sord soro sorr sors soso soss spdp spdr spkr spod spok spoo spop spor spos sppd spps sprd spro sprs spsd spso spsp spss sros srps srsd srsp ssbr ssdd ssdp ssop sspo ssps ssrs sssb ssss