queir uqeir qeuir equir ueqir euqir quier uqier qiuer iquer uiqer iuqer qeiur eqiur qieur iqeur eiqur iequr ueiqr euiqr uieqr iueqr eiuqr ieuqr queri uqeri qeuri equri ueqri euqri qurei uqrei qruei rquei urqei ruqei qerui eqrui qreui rqeui erqui requi uerqi eurqi ureqi rueqi eruqi reuqi quire uqire qiure iqure uiqre iuqre qurie uqrie qruie rquie urqie ruqie qirue iqrue qriue rqiue irque rique uirqe iurqe uriqe ruiqe iruqe riuqe qeiru eqiru qieru iqeru eiqru ieqru qeriu eqriu qreiu rqeiu erqiu reqiu qireu iqreu qrieu rqieu irqeu riqeu eirqu ierqu eriqu reiqu irequ riequ ueirq euirq uierq iuerq eiurq ieurq ueriq euriq ureiq rueiq eruiq reuiq uireq iureq urieq ruieq irueq riueq eiruq ieruq eriuq reiuq ireuq rieuq
Note: these 'words' (valid or invalid) are all the permutations of the word queir. These words are obtained by scrambling the letters in queir.