cphin pchin chpin hcpin phcin hpcin cpihn pcihn ciphn icphn pichn ipchn chipn hcipn cihpn ichpn hicpn ihcpn phicn hpicn pihcn iphcn hipcn ihpcn cphni pchni chpni hcpni phcni hpcni cpnhi pcnhi cnphi ncphi pnchi npchi chnpi hcnpi cnhpi nchpi hncpi nhcpi phnci hpnci pnhci nphci hnpci nhpci cpinh pcinh cipnh icpnh picnh ipcnh cpnih pcnih cnpih ncpih pncih npcih cinph icnph cniph nciph incph nicph pinch ipnch pnich npich inpch nipch chinp hcinp cihnp ichnp hicnp ihcnp chnip hcnip cnhip nchip hncip nhcip cinhp icnhp cnihp ncihp inchp nichp hincp ihncp hnicp nhicp inhcp nihcp phinc hpinc pihnc iphnc hipnc ihpnc phnic hpnic pnhic nphic hnpic nhpic pinhc ipnhc pnihc npihc inphc niphc hinpc ihnpc hnipc nhipc inhpc nihpc
Note: these 'words' (valid or invalid) are all the permutations of the word cphin. These words are obtained by scrambling the letters in cphin.