chemo hcemo cehmo echmo hecmo ehcmo chmeo hcmeo cmheo mcheo hmceo mhceo cemho ecmho cmeho mceho emcho mecho hemco ehmco hmeco mheco emhco mehco cheom hceom cehom echom hecom ehcom choem hcoem cohem ochem hocem ohcem ceohm ecohm coehm ocehm eochm oechm heocm ehocm hoecm ohecm eohcm oehcm chmoe hcmoe cmhoe mchoe hmcoe mhcoe chome hcome cohme ochme hocme ohcme cmohe mcohe comhe ocmhe moche omche hmoce mhoce homce ohmce mohce omhce cemoh ecmoh cmeoh mceoh emcoh mecoh ceomh ecomh coemh ocemh eocmh oecmh cmoeh mcoeh comeh ocmeh moceh omceh emoch meoch eomch oemch moech omech hemoc ehmoc hmeoc mheoc emhoc mehoc heomc ehomc hoemc ohemc eohmc oehmc hmoec mhoec homec ohmec mohec omhec emohc meohc eomhc oemhc moehc omehc
Note: these 'words' (valid or invalid) are all the permutations of the word chemo. These words are obtained by scrambling the letters in chemo.