bbbb bbbs bkpt bksp bobb bobo bobs boko boks boob book boop boos boot bopp bops bosk boso boss bost botb boto bots bott bpot bskt bsos bspp bsts btbp btob btps btss bttb k-os kbbb kbbk kbbo kbbs kbbt kbkb kbkk kbko kbob kbok kboo kbos kbot kbpk kbpo kbps kbpt kbsb kbsk kbso kbss kbst kbtb kbtk kbto kbts kbtt kkbb kkbo kkbs kkbt kkkk kkob kkoo kkot kkpk kkps kkpt kksp kkss kkst kktk kkts kobb kobk kobo kobs kokb kokk koko kokp koks koob kook kooo koop koos koot kopb kopp kops kopt kos- kosb koso kosp koss kost kotb kotk koto kots kott kpbb kpbs kpkk kpob kpok kpoo kpop kppk kppo kppp kpso kpsp kpto kpts kptt ksbp ksbs kskb kskk ksko ksks ksob ksok ksoo ksop ksos kspb kspk kspo ksps kspt ksso ksss ksst kstb kstk ksto kstp ksts kstt ktbb ktbt ktkb ktkk ktko ktks ktkt ktob ktok ktoo ktop ktot ktpk ktpo ktpt ktso ktst kttk ktto kttp ktts kttt obbo obkb obok obos obot obss obst obts okko okok okot okpo okso okto oooo ooos oops oost ootb ootp oots opo- opos oppo opps opto opts osbp osoo osos ossb osso osts otbs oto- otok otoo otos otpp otso otto otts pbpk pbsp pkts pobo pobs poko pook poop poos poot pop- popo popp pops popt posb posk poso poss post poto pots pott ppos pppo pppp ppps ppss ppts pptt psbt psos pspp psps psso psst psts ptop pttk s-os sbbs sbot sbsp sbst sbtk skop skot skpo skss sobo sobp sobs sobt sokk soko sook soop soos soot sopo sopp sops soso soss sost sotk soto sotp sots spok spoo spop spos spot spps spso spsp spss spst sptb spto spts ssop ssot sspo ssps sspt sssb ssss sstb sstp ssts stbs stks stob stok stoo stop stos stot stpp stps stss tbbs tbsp tbst tbtp tkos tkts tobo tobs tobt toko took toos toot top- topo topp tops topt tosb tosk toso toss tost toto tots tott tpks tppp tptp tsks tsob tsop tsos tspo tsps tspt tsst tsts ttbb ttop ttss tttt