olddy loddy odldy doldy ldody dlody olddy loddy odldy doldy ldody dlody oddly dodly oddly dodly ddoly ddoly lddoy dldoy lddoy dldoy ddloy ddloy oldyd lodyd odlyd dolyd ldoyd dloyd olydd loydd oyldd yoldd lyodd ylodd odyld doyld oydld yodld dyold ydold ldyod dlyod lydod yldod dylod ydlod oldyd lodyd odlyd dolyd ldoyd dloyd olydd loydd oyldd yoldd lyodd ylodd odyld doyld oydld yodld dyold ydold ldyod dlyod lydod yldod dylod ydlod oddyl dodyl oddyl dodyl ddoyl ddoyl odydl doydl oyddl yoddl dyodl ydodl odydl doydl oyddl yoddl dyodl ydodl ddyol ddyol dydol yddol dydol yddol lddyo dldyo lddyo dldyo ddlyo ddlyo ldydo dlydo lyddo ylddo dyldo ydldo ldydo dlydo lyddo ylddo dyldo ydldo ddylo ddylo dydlo yddlo dydlo yddlo
Note: these 'words' (valid or invalid) are all the permutations of the word olddy. These words are obtained by scrambling the letters in olddy.