grued rgued gured ugred ruged urged greud rgeud gerud egrud regud ergud guerd ugerd geurd egurd uegrd eugrd ruegd uregd reugd erugd uergd eurgd grude rgude gurde ugrde rugde urgde grdue rgdue gdrue dgrue rdgue drgue gudre ugdre gdure dgure udgre dugre rudge urdge rduge druge udrge durge gredu rgedu gerdu egrdu regdu ergdu grdeu rgdeu gdreu dgreu rdgeu drgeu gedru egdru gderu dgeru edgru degru redgu erdgu rdegu dregu edrgu dergu guedr ugedr geudr egudr uegdr eugdr guder ugder gduer dguer udger duger gedur egdur gdeur dgeur edgur degur uedgr eudgr udegr duegr edugr deugr ruedg uredg reudg erudg uerdg eurdg rudeg urdeg rdueg drueg udreg dureg redug erdug rdeug dreug edrug derug uedrg eudrg uderg duerg edurg deurg
Note: these 'words' (valid or invalid) are all the permutations of the word grued. These words are obtained by scrambling the letters in grued.