ildot lidot idlot dilot ldiot dliot ilodt liodt ioldt oildt loidt olidt idolt diolt iodlt oidlt doilt odilt ldoit dloit lodit oldit dolit odlit ildto lidto idlto dilto ldito dlito iltdo litdo itldo tildo ltido tlido idtlo ditlo itdlo tidlo dtilo tdilo ldtio dltio ltdio tldio dtlio tdlio ilotd liotd ioltd oiltd loitd olitd iltod litod itlod tilod ltiod tliod iotld oitld itold tiold otild toild lotid oltid ltoid tloid otlid tolid idotl diotl iodtl oidtl doitl oditl idtol ditol itdol tidol dtiol tdiol iotdl oitdl itodl tiodl otidl toidl dotil odtil dtoil tdoil otdil todil ldoti dloti lodti oldti dolti odlti ldtoi dltoi ltdoi tldoi dtloi tdloi lotdi oltdi ltodi tlodi otldi toldi dotli odtli dtoli tdoli otdli todli
Note: these 'words' (valid or invalid) are all the permutations of the word ildot. These words are obtained by scrambling the letters in ildot.