bbbb bbbs bnor bnrr bnss bobb bobo bobs bokn boko boks bonk bonn bono bons boob book boon boor boos bor- bork born boro borr bors bosk bosn boso boss brkb brno brns brob brok bron broo bror bros brrr brrs brsb brsr bsns bson bsos k-os kbbb kbbk kbbo kbbr kbbs kbkb kbkk kbko kbkr kbnn kbno kbnr kbob kbok kbon kboo kbos kbrb kbrk kbrn kbro kbsb kbsk kbsn kbso kbsr kbss kkbb kkbn kkbo kkbr kkbs kkkk kknb kknn kkno kkns kkob kkon kkoo kkor kkrb kkrk kkrn kkro kkrr kkrs kksn kksr kkss knbb knbn knbr knkk knnb knnk knnr knns knob knok knon knor knrb knrk knro knrs knsb knsk knsn knso knsr knss kobb kobk kobn kobo kobr kobs kokb kokk kokn koko kokr koks konk kono koob kook koon kooo koor koos korb kork korn koro korr kors kos- kosb koso kosr koss krbb krbk krbr krkk krkn krko krkr krks krnb krnk krnn krno krob krok kroo kror kros krrb krrk krrn krro krrr krrs krsk krsn krsr krss ksbn ksbr ksbs kskb kskk kskn ksko kskr ksks ksnb ksnk ksnn ksnr ksns ksob ksok kson ksoo ksor ksos ksrb ksrn ksro ksrr ksrs kssn ksso kssr ksss nbbo nkok nkor nnnn nnos nnss nobo nobs noko non- nonn nono nons noo- noob nook noon nooo noor noos nor- norb nork norn noro norr nors nos- nosk noss nron nsbo nskk nsnr nsok nsos nssb nsso nssr nsss obbo obkb obok obon obor obos obro obsn obsr obss okko okno okok okon okor okro okso onno onon onor onos onso oons oooo ooos orbb orbo orbs orko orno orns oro- orok oron oror oros orro orrs orsk orso osno osnr osoo osor osos osro ossb osso rbbb rbbr rbbs rbss rkos rkss rnbr rob- robb robo robs rokk roko rokr roks ronk rono rons roob rook roon roor roos rork roro roso ross rrrr rsnn rsno rsnr rsos s-os sbbs sbor sbrk skn- skon skor skss snns snob snoo snor snos snrk snrs sobo sobr sobs sokk sokn soko son- sonk sono sons sook soon soor soos sorb sorn soro sorr sors soso soss srnn srno sros ssbn ssbr ssns ssrs sssb ssss