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