English verb conjugation
COULD RESTRAIN

Regular verb: restrain - restrained - restrained

Affirmation

Simple form	V-ing form
I could restrain you could restrain he could restrain we could restrain you could restrain they could restrain	I could be restraining you could be restraining he could be restraining we could be restraining you could be restraining they could be restraining
Perfect	V-ing perfect
I could have restrained you could have restrained he could have restrained we could have restrained you could have restrained they could have restrained	I could have been restraining you could have been restraining he could have been restraining we could have been restraining you could have been restraining they could have been restraining

Negation

Simple form	V-ing form
I could not restrain you could not restrain he could not restrain we could not restrain you could not restrain they could not restrain	I could not be restraining you could not be restraining he could not be restraining we could not be restraining you could not be restraining they could not be restraining
Perfect	V-ing perfect
I could not have restrained you could not have restrained he could not have restrained we could not have restrained you could not have restrained they could not have restrained	I could not have been restraining you could not have been restraining he could not have been restraining we could not have been restraining you could not have been restraining they could not have been restraining

Interrogative form

Simple form	V-ing form
could I restrain? could you restrain? could he restrain? could we restrain? could you restrain? could they restrain?	could I be restraining? could you be restraining? could he be restraining? could we be restraining? could you be restraining? could they be restraining?
Perfect	V-ing perfect
could I have restrained? could you have restrained? could he have restrained? could we have restrained? could you have restrained? could they have restrained?	could I have been restraining? could you have been restraining? could he have been restraining? could we have been restraining? could you have been restraining? could they have been restraining?

Interro-negative form

Simple form	V-ing form
could I not restrain? could you not restrain? could he not restrain? could we not restrain? could you not restrain? could they not restrain?	could I not be restraining? could you not be restraining? could he not be restraining? could we not be restraining? could you not be restraining? could they not be restraining?
Perfect	V-ing perfect
could I not have restrained? could you not have restrained? could he not have restrained? could we not have restrained? could you not have restrained? could they not have restrained?	could I not have been restraining? could you not have been restraining? could he not have been restraining? could we not have been restraining? could you not have been restraining? could they not have been restraining?