bbbb bbbs bbpr bkpr bkpt bksp bobb bobo bobs boko boks boob book boop boor boos boot bopp bops bor- bork boro borr bors bort bosk boso boss bost botb boto bots bott bpot brkb brob brok broo bror bros brot brrr brrs brsb brsr brst bskt bsos bspp bspr bsts btbp btob btor btps btrt btss bttb k-os kbbb kbbk kbbo kbbr kbbs kbbt kbkb kbkk kbko kbkr kbob kbok kboo kbos kbot kbpk kbpo kbpr kbps kbpt kbrb kbrk kbro kbrt kbsb kbsk kbso kbsr kbss kbst kbtb kbtk kbto kbtr kbts kbtt kkbb kkbo kkbr kkbs kkbt kkkk kkob kkoo kkor kkot kkpk kkps kkpt kkrb kkrk kkro kkrr kkrs kkrt kksp kksr kkss kkst kktk kkts kobb kobk kobo kobr kobs kokb kokk koko kokp kokr koks koob kook kooo koop koor koos koot kopb kopp kopr kops kopt korb kork koro korr kors kort kos- kosb koso kosp kosr koss kost kotb kotk koto kotr kots kott kpbb kpbr kpbs kpkk kpkr kpob kpok kpoo kpop kppk kppo kppp kppr kprb kprk kpro kprp kprr kprs kprt kpso kpsp kpto kptr kpts kptt krbb krbk krbr krbt krkk krko krkr krks krob krok kroo krop kror kros krpr krps krpt krrb krrk krro krrr krrs krrt krsk krsr krss krst krtk krto krtr krts ksbp ksbr ksbs kskb kskk ksko kskr ksks ksob ksok ksoo ksop ksor ksos kspb kspk kspo kspr ksps kspt ksrb ksro ksrp ksrr ksrs ksrt ksso kssr ksss ksst kstb kstk ksto kstp kstr ksts kstt ktbb ktbr ktbt ktkb ktkk ktko ktkr ktks ktkt ktob ktok ktoo ktop ktor ktot ktpk ktpo ktpr ktpt ktrb ktrk ktro ktrp ktrr ktrs ktrt ktso ktsr ktst kttk ktto kttp kttr ktts kttt obbo obkb obok obor obos obot obro obsr obss obst obts okko okok okor okot okpo okro okso okto oooo ooos oops oort oost ootb ootp oots opo- opor opos oppo opps opto opts orbb orbo orbs orko oro- orok oror oros orot orps orro orrs orsk orso orto orts osbp osoo osor osos osro ossb osso ostr osts otbs oto- otok otoo otor otos otpp otro otrs otso otto otts pbpk pbrs pbsp pkts pobo pobs poko pook poop poor poos poot pop- popo popp pops popt porb pork poro porr pors port posb posk poso poss post poto pots pott ppos pppo pppp ppps ppss ppts pptt prbs pro- prob proo prop pros prot prps prrs prso prss prtp prtr psbr psbt psos pspp pspr psps psrk psrp psso psst psts ptop pttk rbbb rbbr rbbs rbsp rbss rbst rkos rkss rkts rob- robb robo robs robt rokk roko rokr roks roob rook roop roor roos root ropo rops rork roro rort roso rosp ross rost rotk roto rotr rots rott rpob rpos rpps rpts rrrr rrsp rsos rspb rspk rspo rsps rstp rsts rtps rtss rttp rtts s-os sbbs sbor sbot sbrk sbsp sbst sbtk skop skor skot skpo skrt skss sobo sobp sobr sobs sobt sokk soko sook soop soor soos soot sopo sopp sops sorb soro sorr sors sort soso soss sost sotk soto sotp sots spkr spok spoo spop spor spos spot spps spro sprs spso spsp spss spst sptb spto sptr spts sros srps srpt srsp srtp srtr ssbr ssop ssot sspo ssps sspt ssrs sssb ssss sstb sstp ssts stbs stks stob stok stoo stop stor stos stot stpp stps strk stro strs stss sttr tbbs tbrb tbsp tbst tbtp tkos tkts tobo tobs tobt toko took toor toos toot top- topo topp tops topt tork toro torp torr tors tort tosb tosk toso toss tost toto totr tots tott tpks tppp tppr tprs tptp tptr troo trop tros trot trpp trps trst trtr tsks tsob tsop tsos tspo tsps tspt tssr tsst tsts ttbb ttop ttss tttt