nflux fnlux nlfux lnfux flnux lfnux nfulx fnulx nuflx unflx funlx ufnlx nlufx lnufx nulfx unlfx lunfx ulnfx flunx lfunx fulnx uflnx lufnx ulfnx nflxu fnlxu nlfxu lnfxu flnxu lfnxu nfxlu fnxlu nxflu xnflu fxnlu xfnlu nlxfu lnxfu nxlfu xnlfu lxnfu xlnfu flxnu lfxnu fxlnu xflnu lxfnu xlfnu nfuxl fnuxl nufxl unfxl funxl ufnxl nfxul fnxul nxful xnful fxnul xfnul nuxfl unxfl nxufl xnufl uxnfl xunfl fuxnl ufxnl fxunl xfunl uxfnl xufnl nluxf lnuxf nulxf unlxf lunxf ulnxf nlxuf lnxuf nxluf xnluf lxnuf xlnuf nuxlf unxlf nxulf xnulf uxnlf xunlf luxnf ulxnf lxunf xlunf uxlnf xulnf fluxn lfuxn fulxn uflxn lufxn ulfxn flxun lfxun fxlun xflun lxfun xlfun fuxln ufxln fxuln xfuln uxfln xufln luxfn ulxfn lxufn xlufn uxlfn xulfn
Note: these 'words' (valid or invalid) are all the permutations of the word nflux. These words are obtained by scrambling the letters in nflux.