English verb conjugation
COULD REDO

Irregular verb: redo - redid - redone

Affirmation

Simple form	V-ing form
I could redo you could redo he could redo we could redo you could redo they could redo	I could be redoing you could be redoing he could be redoing we could be redoing you could be redoing they could be redoing
Perfect	V-ing perfect
I could have redone you could have redone he could have redone we could have redone you could have redone they could have redone	I could have been redoing you could have been redoing he could have been redoing we could have been redoing you could have been redoing they could have been redoing

Negation

Simple form	V-ing form
I couldn't redo you couldn't redo he couldn't redo we couldn't redo you couldn't redo they couldn't redo	I couldn't be redoing you couldn't be redoing he couldn't be redoing we couldn't be redoing you couldn't be redoing they couldn't be redoing
Perfect	V-ing perfect
I couldn't have redone you couldn't have redone he couldn't have redone we couldn't have redone you couldn't have redone they couldn't have redone	I couldn't have been redoing you couldn't have been redoing he couldn't have been redoing we couldn't have been redoing you couldn't have been redoing they couldn't have been redoing

Interrogative form

Simple form	V-ing form
could I redo? could you redo? could he redo? could we redo? could you redo? could they redo?	could I be redoing? could you be redoing? could he be redoing? could we be redoing? could you be redoing? could they be redoing?
Perfect	V-ing perfect
could I have redone? could you have redone? could he have redone? could we have redone? could you have redone? could they have redone?	could I have been redoing? could you have been redoing? could he have been redoing? could we have been redoing? could you have been redoing? could they have been redoing?

Interro-negative form

Simple form	V-ing form
couldn't I redo? couldn't you redo? couldn't he redo? couldn't we redo? couldn't you redo? couldn't they redo?	couldn't I be redoing? couldn't you be redoing? couldn't he be redoing? couldn't we be redoing? couldn't you be redoing? couldn't they be redoing?
Perfect	V-ing perfect
couldn't I have redone? couldn't you have redone? couldn't he have redone? couldn't we have redone? couldn't you have redone? couldn't they have redone?	couldn't I have been redoing? couldn't you have been redoing? couldn't he have been redoing? couldn't we have been redoing? couldn't you have been redoing? couldn't they have been redoing?