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