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bbbb bobb bobo bobu boff bofu boko boku boob boof book boor bor- borf bork boro borr boru bouf bouk bour brfu brkb brob brok broo bror brou brrr bubb bubo bubu buff bufo bufr bukk buko buku bur- burb burk buro burr buru f--k ffff ffrr fofo foof fook for- forb fork foro forr four frob frou frub fubb fubu fuff fufu fukk fuko fuku fuor fur- furo furr kbbb kbbf kbbk kbbo kbbr kbbu kbfb kbff kbfk kbfo kbfr kbkb kbkf kbkk kbko kbkr kbob kbok kboo kbrb kbrf kbrk kbro kbru kbub kbuf kbuk kbur kbuu kfbk kffb kfff kffk kfkb kfok kfoo kfor kfro kfrr kfru kfuo kkbb kkbo kkbr kkfr kkkk kkob kkoo kkor kkrb kkrf kkrk kkro kkrr kkuu kobb kobk kobo kobr kobu koff kofk kofo kofu kokb kokf kokk koko kokr koku koob kook kooo koor koou korb korf kork koro korr koru koub kour kouu krbb krbk krbr krff krfo krkk krko krkr krku krob krof krok kroo kror krrb krrf krrk krro krrr kruf kruk krur kubb kubo kubr kubu kuff kufo kufr kukk kuku kuok kuoo kurb kurk kuro kurr kuru kuub kuuk kuur kuuu obbo obkb obok obor obro off- offo offr offu ofor okko okok okor okro okur ooff ooku oooo orbb orbo orbu orff orfu orko oro- orof orok oror orro orub ouff our- ouro ouu- rbbb rbbr rkkf rob- robb robo robu roff rofo rokk roko rokr roku roob roof rook roor rork roro roru roub rouf rouk rrrr rubb rubu ruff rufo rukk ruku ruok ruro ruru ubbo ufuk ukko ukok ukur uofo uor- urff uro- urok uroo uruk urur uuuu

b-r-k bbook bo-bo bobko bobok bobr boffo bokko bokok bokor booko booru borbo borko borku boro- borok boroo borou borro bouko brobo brook brouk brrrr bruff buffo bukk- bukor buroo burro burru buruk forro forur fourb fouro fruko fu-fu furbo furo- furor k-rob ko-ko kobru kobuk kokko kokor kokou kokur kooru korbo korff korku koror korro koruk koufu kubok kukko kukok kukur kurbu kurku kuruk o-r-b oboro obrok offof ofour okkur okobo okoro okubo okuku okuru ooooo orfor orobo oruku oruro ouoro ro-ro robbo robo- robor robur rofor rokkk rorbu rouko rubof rubor ruffo rufo- ubobo ufofu uforb ukobu uroob urour urubu uuork uuuuu

bbbbbb bobrok bokoro booboo bookof borbor borkou boroko bororo boubou boukou bourou brokkr brubru bububu bukkur bukuru burbur buruku foboff foofoo foofur foufou fourof fourou frbroo fukuro furfur furour furrfu koboko kofuku kokofu kokoku kokoro kokubo kokufu kookoo korkor kororo korubo koruru koubou kouffo koukou kouoro kourou kuo-fu kuroko kururu ookroo oooooo orrour rokkor rokuko rokuro ruboff rubro-

bbbbbbb bok-bok boo-boo boobook bourrou brokoff brokour foo-foo fou-fou furrour kobroor kokorou kor-kor korkoro kuffour off-off offbook oroboro rub-off rubbour ububboo

bbbbbbbb bo-bo-bo broubrou buruburu fourbour froufrou kobukuro kokborok kukukuku kukuruku kuruburu kurukuru off-book rokkurro ubbubboo

borborbor four-four frou-frou koukourou

kouroukoro kukkurukuu

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