telco etlco tleco lteco eltco letco teclo etclo tcelo ctelo ectlo cetlo tlceo ltceo tcleo ctleo lcteo clteo elcto lecto eclto celto lceto cleto teloc etloc tleoc lteoc eltoc letoc teolc etolc toelc otelc eotlc oetlc tloec ltoec tolec otlec lotec oltec elotc leotc eoltc oeltc loetc oletc tecol etcol tceol cteol ectol cetol teocl etocl toecl otecl eotcl oetcl tcoel ctoel tocel otcel cotel octel ecotl ceotl eoctl oectl coetl ocetl tlcoe ltcoe tcloe ctloe lctoe cltoe tloce ltoce tolce otlce lotce oltce tcole ctole tocle otcle cotle octle lcote clote locte olcte colte oclte elcot lecot eclot celot lceot cleot eloct leoct eolct oelct loect olect ecolt ceolt eoclt oeclt coelt ocelt lcoet cloet locet olcet colet oclet
Note: these 'words' (valid or invalid) are all the permutations of the word telco. These words are obtained by scrambling the letters in telco.