could restrain
Regular verb: restrain - restrained- restrained

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