bluid lbuid bulid ublid lubid ulbid bliud lbiud bilud iblud libud ilbud build ubild biuld ibuld uibld iubld luibd ulibd liubd ilubd uilbd iulbd bludi lbudi buldi ubldi lubdi ulbdi bldui lbdui bdlui dblui ldbui dlbui budli ubdli bduli dbuli udbli dubli ludbi uldbi ldubi dlubi udlbi dulbi blidu lbidu bildu ibldu libdu ilbdu bldiu lbdiu bdliu dbliu ldbiu dlbiu bidlu ibdlu bdilu dbilu idblu diblu lidbu ildbu ldibu dlibu idlbu dilbu buidl ubidl biudl ibudl uibdl iubdl budil ubdil bduil dbuil udbil dubil bidul ibdul bdiul dbiul idbul dibul uidbl iudbl udibl duibl idubl diubl luidb ulidb liudb iludb uildb iuldb ludib uldib lduib dluib udlib dulib lidub ildub ldiub dliub idlub dilub uidlb iudlb udilb duilb idulb diulb
Note: these 'words' (valid or invalid) are all the permutations of the word bluid. These words are obtained by scrambling the letters in bluid.