English verb conjugation
COULD STICK

Irregular verb: stick - stuck - stuck

Affirmation

Simple form	V-ing form
I could stick you could stick she could stick we could stick you could stick they could stick	I could be sticking you could be sticking she could be sticking we could be sticking you could be sticking they could be sticking
Perfect	V-ing perfect
I could have stuck you could have stuck she could have stuck we could have stuck you could have stuck they could have stuck	I could have been sticking you could have been sticking she could have been sticking we could have been sticking you could have been sticking they could have been sticking

Negation

Simple form	V-ing form
I could not stick you could not stick she could not stick we could not stick you could not stick they could not stick	I could not be sticking you could not be sticking she could not be sticking we could not be sticking you could not be sticking they could not be sticking
Perfect	V-ing perfect
I could not have stuck you could not have stuck she could not have stuck we could not have stuck you could not have stuck they could not have stuck	I could not have been sticking you could not have been sticking she could not have been sticking we could not have been sticking you could not have been sticking they could not have been sticking

Interrogative form

Simple form	V-ing form
could I stick? could you stick? could she stick? could we stick? could you stick? could they stick?	could I be sticking? could you be sticking? could she be sticking? could we be sticking? could you be sticking? could they be sticking?
Perfect	V-ing perfect
could I have stuck? could you have stuck? could she have stuck? could we have stuck? could you have stuck? could they have stuck?	could I have been sticking? could you have been sticking? could she have been sticking? could we have been sticking? could you have been sticking? could they have been sticking?

Interro-negative form

Simple form	V-ing form
could I not stick? could you not stick? could she not stick? could we not stick? could you not stick? could they not stick?	could I not be sticking? could you not be sticking? could she not be sticking? could we not be sticking? could you not be sticking? could they not be sticking?
Perfect	V-ing perfect
could I not have stuck? could you not have stuck? could she not have stuck? could we not have stuck? could you not have stuck? could they not have stuck?	could I not have been sticking? could you not have been sticking? could she not have been sticking? could we not have been sticking? could you not have been sticking? could they not have been sticking?