tvrex vtrex trvex rtvex vrtex rvtex tverx vterx tevrx etvrx vetrx evtrx trevx rtevx tervx etrvx retvx ertvx vretx rvetx vertx evrtx revtx ervtx tvrxe vtrxe trvxe rtvxe vrtxe rvtxe tvxre vtxre txvre xtvre vxtre xvtre trxve rtxve txrve xtrve rxtve xrtve vrxte rvxte vxrte xvrte rxvte xrvte tvexr vtexr tevxr etvxr vetxr evtxr tvxer vtxer txver xtver vxter xvter texvr etxvr txevr xtevr extvr xetvr vextr evxtr vxetr xvetr exvtr xevtr trexv rtexv terxv etrxv retxv ertxv trxev rtxev txrev xtrev rxtev xrtev texrv etxrv txerv xterv extrv xetrv rextv erxtv rxetv xretv exrtv xertv vrext rvext verxt evrxt revxt ervxt vrxet rvxet vxret xvret rxvet xrvet vexrt evxrt vxert xvert exvrt xevrt rexvt erxvt rxevt xrevt exrvt xervt
Note: these 'words' (valid or invalid) are all the permutations of the word tvrex. These words are obtained by scrambling the letters in tvrex.