English verb conjugation
COULD STAGE

Regular verb: stage - staged - staged

Affirmation

Simple form	V-ing form
I could stage you could stage she could stage we could stage you could stage they could stage	I could be staging you could be staging she could be staging we could be staging you could be staging they could be staging
Perfect	V-ing perfect
I could have staged you could have staged she could have staged we could have staged you could have staged they could have staged	I could have been staging you could have been staging she could have been staging we could have been staging you could have been staging they could have been staging

Negation

Simple form	V-ing form
I could not stage you could not stage she could not stage we could not stage you could not stage they could not stage	I could not be staging you could not be staging she could not be staging we could not be staging you could not be staging they could not be staging
Perfect	V-ing perfect
I could not have staged you could not have staged she could not have staged we could not have staged you could not have staged they could not have staged	I could not have been staging you could not have been staging she could not have been staging we could not have been staging you could not have been staging they could not have been staging

Interrogative form

Simple form	V-ing form
could I stage? could you stage? could she stage? could we stage? could you stage? could they stage?	could I be staging? could you be staging? could she be staging? could we be staging? could you be staging? could they be staging?
Perfect	V-ing perfect
could I have staged? could you have staged? could she have staged? could we have staged? could you have staged? could they have staged?	could I have been staging? could you have been staging? could she have been staging? could we have been staging? could you have been staging? could they have been staging?

Interro-negative form

Simple form	V-ing form
could I not stage? could you not stage? could she not stage? could we not stage? could you not stage? could they not stage?	could I not be staging? could you not be staging? could she not be staging? could we not be staging? could you not be staging? could they not be staging?
Perfect	V-ing perfect
could I not have staged? could you not have staged? could she not have staged? could we not have staged? could you not have staged? could they not have staged?	could I not have been staging? could you not have been staging? could she not have been staging? could we not have been staging? could you not have been staging? could they not have been staging?