ffff ffrr floo flop flor flou floy fluf fluo flur fluy fofo foll folo folr foly foof fool fopp for- forl foro forr foul foup four foyl fprf frol frop frou fuff fufu full fulu fuor fur- furl furo furr fury fuyl fuyu fyry llll lloo llyr loff loll lolo loly loof lool loop loor lopp lopu loro lory loul loup lour louu lpfp lppl lprp lrpu lrrr lrry luff lufu lull lulu lupo lupu lury luup lyff lyfy lyly lyo- lyro lyyf off- offo offr offu offy ofor ollo olly olof olor olry olur olyf ooff oofy oolo oooo oory opo- opor oppo oppy opry orff orfu orlo orlu orly oro- orof oror oroy orro orry orup ouff oulu our- ouro ouu- ouyr oyly oyou pfff pffr plff ploo plop plou ploy plpp plup plur poff poll polo polu poly poof pool poop poor pop- popo popp popy poro porr pory pouf poul poup pour pouy poyo poyr pplo pppo pppp pprf ppru ppur prlr pro- prof prol proo prop prou pruf pruu puff pull pulo pulp pulu puly puoy pupl pupu pupy pur- purl puro purp purr puru pury puy- puyo pyl- pyll pyo- pypy pyr- pyrl pyro pyry rffl roff rofl rofo rolf roll rolo rolp roly roof rool roop roor ropo ropy roro roru rory rouf roul roup rouy royl rpof rrrr ruff rufo rull rulo ruly ruoy rupp rupy ruro rurp ruru ruyl ryff ryyf u-rp ullo ullr ully ulo- ulul uofl uofo uor- uplo upor uppp uppu uppy upup urff uro- urol uroo urpo urry urup urur uulu uuuu yoff yoll yolo yolp yoly yoof yool yoop yopo yopy yoro yory youf youl youp your yoyo ypfl yrly yrof yuff yufu yulo yulu yury yuyu yyff yyyy