dddd dod- dodd dodo dold doll dolo dolu dond donn dono donr dood dool doon door dord dorn doro dorr doru doud doul doun dour drno drod drol dron drou druu dudd dudo dudu dull dulo dulu dunn duno duo- duon durn duro duru duul duur llll llod lloo llud lndn lold loll lolo lond lono lonr lood lool loon loor lord lorn loro loud loul loun lour louu lrdd lron lrrr ludd ludo lull lulu lund lunn luno lurd nddo ndor nnnn nodo nodu nold noll nolo non- nonn nono nonu noo- nool noon nooo noor nor- nord norn noro norr noul noun nour nron nrrd nrrl nudd nudo null nunn nuno nuon nurd nurl nurn nurr nuru oddd odon odoo odor odou odrl odur oldn ollo olon olor olur ondo onno onod onon onor onur oold oolo oooo oord ordn ordo ordu orlo orlu orno oro- oron oror orro ould oulu oun- ound our- ourn ouro ouu- rnld rnod rodd rodo rold roll rolo rond rono rood rool roon roor roro roru roud roul roun rrrr rrun rudd rudl rudo rull rulo rund runn runo rurd ruro ruru ruud ruun udon udoo udun ullo ullr ulno ulo- ulul undo unno unon unro uor- urdu uro- urol uroo urun urur uulu uuno uuuu