oeisd eoisd oiesd ioesd eiosd ieosd oesid eosid oseid soeid esoid seoid oised iosed osied soied isoed sioed eisod iesod esiod seiod iseod sieod oeids eoids oieds ioeds eiods ieods oedis eodis odeis doeis edois deois oides iodes odies doies idoes dioes eidos iedos edios deios ideos dieos oesdi eosdi osedi soedi esodi seodi oedsi eodsi odesi doesi edosi deosi osdei sodei odsei dosei sdoei dsoei esdoi sedoi edsoi desoi sdeoi dseoi oisde iosde oside soide isode siode oidse iodse odise doise idose diose osdie sodie odsie dosie sdoie dsoie isdoe sidoe idsoe disoe sdioe dsioe eisdo iesdo esido seido isedo siedo eidso iedso ediso deiso ideso dieso esdio sedio edsio desio sdeio dseio isdeo sideo idseo diseo sdieo dsieo
Note: these 'words' (valid or invalid) are all the permutations of the word oeisd. These words are obtained by scrambling the letters in oeisd.