could redo
Irregular verb: redo - redid- redone

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