bbbb bbbs bbrg bggs bobb bobo bobs bogg bogo bogs boko boks boob boog book boor boos bor- borg bork boro borr bors bosk boso boss brkb brob brog brok broo bror bros brrr brrs brsb brsr bsgs bsos gbbo gbbs gggg ggss gobo gobs gogo gogs goog gook goor goos gorb gorg goro gorr gors goso goss grbr grob grog grok groo gror gros grrr grrs grss gskb gsos k-os kbbb kbbg kbbk kbbo kbbr kbbs kbgb kbgg kbgo kbgr kbkb kbkg kbkk kbko kbkr kbob kbok kboo kbos kbrb kbrg kbrk kbro kbsb kbsg kbsk kbso kbsr kbss kgbb kgbr kggg kggo kggr kgks kgor kgos kgrb kgrg kgrk kgro kgrr kgrs kgso kgsr kkbb kkbg kkbo kkbr kkbs kkgb kkgo kkgr kkkk kkob kkoo kkor kkrb kkrk kkro kkrr kkrs kksr kkss kobb kobk kobo kobr kobs kogb kogg kogo kokb kokk koko kokr koks koob koog kook kooo koor koos korb korg kork koro korr kors kos- kosb kosg koso kosr koss krbb krbg krbk krbr krgs krkk krko krkr krks krob krog krok kroo kror kros krrb krrg krrk krro krrr krrs krsk krsr krss ksbr ksbs ksgg ksgr kskb kskg kskk ksko kskr ksks ksob ksok ksoo ksor ksos ksrb ksrg ksro ksrr ksrs ksso kssr ksss obbo obkb obok obor obos obro obsr obss ogb ogog ogro okgo okko okok okor okro okso oooo ooos orbb orbo orbs orgo orgs orko oro- orok oror oros orro orrs orsk orso osoo osor osos osro ossb osso rbbb rbbr rbbs rbss rkos rkss rob- robb robo robs rogg rogo rokk roko rokr roks roob roog rook roor roos rork roro roso ross rrrr rsgb rsos s-os sbbs sbor sbrk sggg sggs sgro sgss skog skor skss sobo sobr sobs sogo sogs sokk soko soog sook soor soos sorb sorg soro sorr sors soso soss srgb sros ssbr ssgs ssrg ssrs sssb ssss