dddd ddpo dfrf dod- dodd dodo doff dold dolf doll dolo dolp dolu dood doof dool doop door dopo dopp dopr dord dorf doro dorp dorr doru doud douf doul doup dour dpll drod drof drol drop drou drup druu dudd dudo dudu duff dufu dull dulo dulu duo- dupo duro duru duul duur fdlr ffff ffrr fldr flod floo flop flor flou flud fluf fluo flur fofo fold foll folo folr food foof fool fopp for- ford forl foro forr foud foul foup four fpdl fprf frol frop frou frpd fudd fuff fufu full fulu fuor fur- furl furo furr lddp lfrd lldp llll llod lloo llud loff lold loll lolo lood loof lool loop loor lopp lopu lord loro loud loul loup lour louu lpfp lpod lppl lprp lrdd lrpu lrrr ludd ludo luff lufu lull lulu lupo lupu lurd luup oddd odoo odop odor odou odrl odrp odur ofdr off- offo offr offu ofor ollo olof olor olur ooff oold oolo oooo oord opo- opor oppo ordo ordu orff orfu orlo orlu oro- orof oror orro orup ouff ould oulu our- ouro ouu- pdpr pfff pffr plff plod ploo plop plou plpp plud plup plur pod- podd podo podu poff pold poll polo polu pood poof pool poop poor pop- popo popp poro porr poud pouf poul poup pour pplo ppod pppd pppo pppp pprf ppru ppur prlr pro- prod prof prol proo prop prou prpd prrd prud pruf pruu pudo pudu puff pull pulo pulp pulu pupl pupu pur- purl puro purp purr puru rffl rodd rodo roff rofl rofo rold rolf roll rolo rolp rood roof rool roop roor ropo roro roru roud rouf roul roup rpdp rpof rrrr rudd rudl rudo rudp ruff rufo rull rulo rupp rurd ruro rurp ruru ruud u-rp udoo udop udpd ullo ullr ulo- ulul uofl uofo uor- updf updo uplo upor uppp uppu upup urdu urff uro- urol uroo urpo urup urur uulu uuuu