d-rod ddddd do-do do-ol dodol dodoo dodro dofor dollo dollu dolor dolpo doodo dopdf dorff dorud doufu doull douro droff droll drood droof drool droop drop- dropo droul droup duddo dudou dufur dullu duplo ffold flodd flood floop floor floro floru floud flour fludd fluff fluo- fluor flurr fodor follo foord ford- fordo fordp forro forud forur fould fourd fouro frodo frood froop froud froup fu-fu fuddu fullf fullo fulop fulup furo- furor furud fuudo l-pop loddo lodro lofou lollo lolol loord lopou lopud lorup lourd louro luddu lulul lupul lurup oddup oddur odolo odoul odour odudu odulf oduro offof ofold ofour ofpop ollup ollur olord olour ooooo oopod oploo opodo oppol ordro orfor orful orlop orodo orold orolu oruro oullo ouoro ourol pforp ploop plopp plopu ploud pluff plupp po-po podo- podol podor podul pollo pollu polod polop polur poopo poplr popop poppo popup poro- porro porur pouff poulp prodd proff proll prolo proof proor prop- propl propp propr proud pudor pudur pull- pullu puppo puro- purul rdllr ro-ro rodl rodor rofor rolfo rollo roodu roull rprop ruffo rufo- rufol rullo u-pop udol udoll ufofu ullur uloop ulpur ululu uluru up-do upfor upoff upolo upolu urour uuuuu