ridie irdie rdiie driie idrie dirie riide iride riide iride iirde iirde rdiie driie ridie irdie dirie idrie idire diire iidre iidre diire idire ridei irdei rdiei driei idrei direi riedi iredi reidi eridi ierdi eirdi rdeii dreii redii erdii derii edrii ideri dieri iedri eidri deiri ediri riied iried riied iried iired iired rieid ireid reiid eriid ierid eirid rieid ireid reiid eriid ierid eirid iierd iierd ieird eiird ieird eiird rdiei driei ridei irdei direi idrei rdeii dreii redii erdii derii edrii riedi iredi reidi eridi ierdi eirdi dieri ideri deiri ediri iedri eidri idier diier iider iider diier idier ideir dieir iedir eidir deiir ediir iiedr iiedr ieidr eiidr ieidr eiidr dieir ideir deiir ediir iedir eidir
Note: these 'words' (valid or invalid) are all the permutations of the word ridie. These words are obtained by scrambling the letters in ridie.