techs etchs tcehs ctehs ecths ceths tehcs ethcs thecs htecs ehtcs hetcs tches cthes thces htces chtes hctes echts cehts ehcts hects chets hcets tecsh etcsh tcesh ctesh ectsh cetsh tesch etsch tsech stech estch setch tcseh ctseh tsceh stceh csteh scteh ecsth cesth escth secth cseth sceth tehsc ethsc thesc htesc ehtsc hetsc teshc etshc tsehc stehc esthc sethc thsec htsec tshec sthec hstec shtec ehstc hestc eshtc sehtc hsetc shetc tchse cthse thcse htcse chtse hctse tcshe ctshe tsche stche csthe scthe thsce htsce tshce sthce hstce shtce chste hcste cshte schte hscte shcte echst cehst ehcst hecst chest hcest ecsht cesht escht secht cseht sceht ehsct hesct eshct sehct hsect shect chset hcset cshet schet hscet shcet
Note: these 'words' (valid or invalid) are all the permutations of the word techs. These words are obtained by scrambling the letters in techs.