English verb conjugation
COULD OVERDO

Irregular verb: overdo - overdid - overdone

Affirmation

Simple form	V-ing form
I could overdo you could overdo he could overdo we could overdo you could overdo they could overdo	I could be overdoing you could be overdoing he could be overdoing we could be overdoing you could be overdoing they could be overdoing
Perfect	V-ing perfect
I could have overdone you could have overdone he could have overdone we could have overdone you could have overdone they could have overdone	I could have been overdoing you could have been overdoing he could have been overdoing we could have been overdoing you could have been overdoing they could have been overdoing

Negation

Simple form	V-ing form
I could not overdo you could not overdo he could not overdo we could not overdo you could not overdo they could not overdo	I could not be overdoing you could not be overdoing he could not be overdoing we could not be overdoing you could not be overdoing they could not be overdoing
Perfect	V-ing perfect
I could not have overdone you could not have overdone he could not have overdone we could not have overdone you could not have overdone they could not have overdone	I could not have been overdoing you could not have been overdoing he could not have been overdoing we could not have been overdoing you could not have been overdoing they could not have been overdoing

Interrogative form

Simple form	V-ing form
could I overdo? could you overdo? could he overdo? could we overdo? could you overdo? could they overdo?	could I be overdoing? could you be overdoing? could he be overdoing? could we be overdoing? could you be overdoing? could they be overdoing?
Perfect	V-ing perfect
could I have overdone? could you have overdone? could he have overdone? could we have overdone? could you have overdone? could they have overdone?	could I have been overdoing? could you have been overdoing? could he have been overdoing? could we have been overdoing? could you have been overdoing? could they have been overdoing?

Interro-negative form

Simple form	V-ing form
could I not overdo? could you not overdo? could he not overdo? could we not overdo? could you not overdo? could they not overdo?	could I not be overdoing? could you not be overdoing? could he not be overdoing? could we not be overdoing? could you not be overdoing? could they not be overdoing?
Perfect	V-ing perfect
could I not have overdone? could you not have overdone? could he not have overdone? could we not have overdone? could you not have overdone? could they not have overdone?	could I not have been overdoing? could you not have been overdoing? could he not have been overdoing? could we not have been overdoing? could you not have been overdoing? could they not have been overdoing?