cpuoh pcuoh cupoh ucpoh pucoh upcoh cpouh pcouh copuh ocpuh pocuh opcuh cuoph ucoph couph ocuph uocph oucph puoch upoch pouch opuch uopch oupch cpuho pcuho cupho ucpho pucho upcho cphuo pchuo chpuo hcpuo phcuo hpcuo cuhpo uchpo chupo hcupo uhcpo hucpo puhco uphco phuco hpuco uhpco hupco cpohu pcohu cophu ocphu pochu opchu cphou pchou chpou hcpou phcou hpcou cohpu ochpu chopu hcopu ohcpu hocpu pohcu ophcu phocu hpocu ohpcu hopcu cuohp ucohp couhp ocuhp uochp ouchp cuhop uchop chuop hcuop uhcop hucop cohup ochup choup hcoup ohcup hocup uohcp ouhcp uhocp huocp ohucp houcp puohc upohc pouhc opuhc uophc ouphc puhoc uphoc phuoc hpuoc uhpoc hupoc pohuc ophuc phouc hpouc ohpuc hopuc uohpc ouhpc uhopc huopc ohupc houpc
Note: these 'words' (valid or invalid) are all the permutations of the word cpuoh. These words are obtained by scrambling the letters in cpuoh.