pdlga dplga pldga lpdga dlpga ldpga pdgla dpgla pgdla gpdla dgpla gdpla plgda lpgda pglda gplda lgpda glpda dlgpa ldgpa dglpa gdlpa lgdpa gldpa pdlag dplag pldag lpdag dlpag ldpag pdalg dpalg padlg apdlg daplg adplg pladg lpadg paldg apldg lapdg alpdg dlapg ldapg dalpg adlpg ladpg aldpg pdgal dpgal pgdal gpdal dgpal gdpal pdagl dpagl padgl apdgl dapgl adpgl pgadl gpadl pagdl apgdl gapdl agpdl dgapl gdapl dagpl adgpl gadpl agdpl plgad lpgad pglad gplad lgpad glpad plagd lpagd palgd aplgd lapgd alpgd pgald gpald pagld apgld gapld agpld lgapd glapd lagpd algpd galpd aglpd dlgap ldgap dglap gdlap lgdap gldap dlagp ldagp dalgp adlgp ladgp aldgp dgalp gdalp daglp adglp gadlp agdlp lgadp gladp lagdp algdp galdp agldp
Note: these 'words' (valid or invalid) are all the permutations of the word pdlga. These words are obtained by scrambling the letters in pdlga.