dddd dfrf dod- dodd dodo doff dold dolf doll dolo dolu dood doof dool door dord dorf doro dorr doru doud douf doul dour drod drof drol drou druu dudd dudo dudu duff dufu dull dulo dulu duo- duro duru duul duur fdlr ffff ffrr fldr flod floo flor flou flud fluf fluo flur fofo fold foll folo folr food foof fool for- ford forl foro forr foud foul four frol frou fudd fuff fufu full fulu fuor fur- furl furo furr lfrd llll llod lloo llud loff lold loll lolo lood loof lool loor lord loro loud loul lour louu lrdd lrrr ludd ludo luff lufu lull lulu lurd oddd odoo odor odou odrl odur ofdr off- offo offr offu ofor ollo olof olor olur ooff oold oolo oooo oord ordo ordu orff orfu orlo orlu oro- orof oror orro ouff ould oulu our- ouro ouu- rffl rodd rodo roff rofl rofo rold rolf roll rolo rood roof rool roor roro roru roud rouf roul rrrr rudd rudl rudo ruff rufo rull rulo rurd ruro ruru ruud udoo ullo ullr ulo- ulul uofl uofo uor- urdu urff uro- urol uroo urur uulu uuuu