harks ahrks hraks rhaks arhks rahks hakrs ahkrs hkars khars akhrs kahrs hrkas rhkas hkras khras rkhas krhas arkhs rakhs akrhs karhs rkahs krahs harsk ahrsk hrask rhask arhsk rahsk hasrk ahsrk hsark shark ashrk sahrk hrsak rhsak hsrak shrak rshak srhak arshk rashk asrhk sarhk rsahk srahk haksr ahksr hkasr khasr akhsr kahsr haskr ahskr hsakr shakr ashkr sahkr hksar khsar hskar shkar kshar skhar akshr kashr askhr sakhr ksahr skahr hrksa rhksa hkrsa khrsa rkhsa krhsa hrska rhska hsrka shrka rshka srhka hksra khsra hskra shkra kshra skhra rksha krsha rskha srkha ksrha skrha arksh raksh akrsh karsh rkash krash arskh raskh asrkh sarkh rsakh srakh aksrh kasrh askrh sakrh ksarh skarh rksah krsah rskah srkah ksrah skrah
Note: these 'words' (valid or invalid) are all the permutations of the word harks. These words are obtained by scrambling the letters in harks.