bbbb bbrg bfgf bobb bobo boff bogg bogo boko boob boof boog book boor bor- borf borg bork boro borr brkb brob brog brok broo bror brrr f--k ffff ffrr fofo fogg fogo foof fook for- forb forg fork foro forr frob frog gbbo gfor ggfg gggg gobo goff gofr gogo goof goog gook goor gorb gorf gorg goro gorr grbr grob grof grog grok groo gror grrr kbbb kbbf kbbg kbbk kbbo kbbr kbfb kbff kbfk kbfo kbfr kbgb kbgg kbgo kbgr kbkb kbkf kbkg kbkk kbko kbkr kbob kbok kboo kbrb kbrf kbrg kbrk kbro kfbk kffb kfff kffg kffk kfgo kfgr kfkb kfog kfok kfoo kfor kfrg kfro kfrr kgbb kgbr kgff kgfk kggf kggg kggo kggr kgor kgrb kgrg kgrk kgro kgrr kkbb kkbg kkbo kkbr kkfg kkfr kkgb kkgo kkgr kkkk kkob kkoo kkor kkrb kkrf kkrk kkro kkrr kobb kobk kobo kobr koff kofg kofk kofo kogb kogg kogo kokb kokf kokk koko kokr koob koog kook kooo koor korb korf korg kork koro korr krbb krbg krbk krbr krff krfg krfo krkk krko krkr krob krof krog krok kroo kror krrb krrf krrg krrk krro krrr obbo obkb obok obor obro off- offo offr ofgo ofor ogb ogfr ogog ogro okgo okko okok okor okro ooff oooo orbb orbo orff orgo orko oro- orof orok oror orro rbbb rbbr rkkf rob- robb robo roff rofo rogg rogo rokk roko rokr roob roof roog rook roor rork roro rrrr