dddd dod- dodd dodo doff dold dolf doll dolo dolu dond donn dono dood doof dool doon doud douf doul doun dudd dudo dudu duff dufu dull dulo dulu dunn duno duo- duon duul ffff ffun flod flon floo flou flud fluf fluo fndd fndn fnuf fofo fold foll folo fond fono food foof fool foon foud foul foun fudd fuff fufu full fulu fund funf llll llod lloo llud lndn loff lofn lold loll lolo lond lono lood loof lool loon loud loul loun louu ludd ludo luff lufu lull lulu lund lunn luno nddo nfff nfld nfon nnnn nodo nodu nold nolf noll nolo non- nonn nono nonu noo- nool noon nooo noul noun nudd nudo nuff null nunn nuno nuon oddd odon odoo odou off- offo offu ofno oldn ollo olof olon ondo onlf onno onod onon ooff oold oolo oooo ouff ould oulu oun- ound ouu- udon udoo udun ullo ulno ulo- ulul undo unfd unlf unno unon uofl uofo uulu uuno uuuu