ponds opnds pnods npods onpds nopds podns opdns pdons dpons odpns dopns pndos npdos pdnos dpnos ndpos dnpos ondps nodps odnps donps ndops dnops ponsd opnsd pnosd nposd onpsd nopsd posnd opsnd psond spond ospnd sopnd pnsod npsod psnod spnod nspod snpod onspd nospd osnpd sonpd nsopd snopd podsn opdsn pdosn dposn odpsn dopsn posdn opsdn psodn spodn ospdn sopdn pdson dpson psdon spdon dspon sdpon odspn dospn osdpn sodpn dsopn sdopn pndso npdso pdnso dpnso ndpso dnpso pnsdo npsdo psndo spndo nspdo snpdo pdsno dpsno psdno spdno dspno sdpno ndspo dnspo nsdpo sndpo dsnpo sdnpo ondsp nodsp odnsp donsp ndosp dnosp onsdp nosdp osndp sondp nsodp snodp odsnp dosnp osdnp sodnp dsonp sdonp ndsop dnsop nsdop sndop dsnop sdnop
Note: these 'words' (valid or invalid) are all the permutations of the word ponds. These words are obtained by scrambling the letters in ponds.