fapdo afpdo fpado pfado apfdo pafdo fadpo afdpo fdapo dfapo adfpo dafpo fpdao pfdao fdpao dfpao pdfao dpfao apdfo padfo adpfo dapfo pdafo dpafo fapod afpod fpaod pfaod apfod pafod faopd afopd foapd ofapd aofpd oafpd fpoad pfoad fopad ofpad pofad opfad apofd paofd aopfd oapfd poafd opafd fadop afdop fdaop dfaop adfop dafop faodp afodp foadp ofadp aofdp oafdp fdoap dfoap fodap ofdap dofap odfap adofp daofp aodfp oadfp doafp odafp fpdoa pfdoa fdpoa dfpoa pdfoa dpfoa fpoda pfoda fopda ofpda pofda opfda fdopa dfopa fodpa ofdpa dofpa odfpa pdofa dpofa podfa opdfa dopfa odpfa apdof padof adpof dapof pdaof dpaof apodf paodf aopdf oapdf poadf opadf adopf daopf aodpf oadpf doapf odapf pdoaf dpoaf podaf opdaf dopaf odpaf
Note: these 'words' (valid or invalid) are all the permutations of the word fapdo. These words are obtained by scrambling the letters in fapdo.