could separate
Regular verb: separate - separated- separated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could separate
you could separate
she could separate
we could separate
you could separate
they could separate 	I could be separating
you could be separating
she could be separating
we could be separating
you could be separating
they could be separating	I could have separated
you could have separated
she could have separated
we could have separated
you could have separated
they could have separated	I could have been separating
you could have been separating
she could have been separating
we could have been separating
you could have been separating
they could have been separating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not separate
you could not separate
she could not separate
we could not separate
you could not separate
they could not separate 	I could not be separating
you could not be separating
she could not be separating
we could not be separating
you could not be separating
they could not be separating	I could not have separated
you could not have separated
she could not have separated
we could not have separated
you could not have separated
they could not have separated	I could not have been separating
you could not have been separating
she could not have been separating
we could not have been separating
you could not have been separating
they could not have been separating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I separate?
could you separate?
could she separate?
could we separate?
could you separate?
could they separate? 	could I be separating?
could you be separating?
could she be separating?
could we be separating?
could you be separating?
could they be separating? 	could I have separated?
could you have separated?
could she have separated?
could we have separated?
could you have separated?
could they have separated? 	could I have been separating?
could you have been separating?
could she have been separating?
could we have been separating?
could you have been separating?
could they have been separating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not separate?
could you not separate?
could she not separate?
could we not separate?
could you not separate?
could they not separate? 	could I not be separating?
could you not be separating?
could she not be separating?
could we not be separating?
could you not be separating?
could they not be separating? 	could I not have separated?
could you not have separated?
could she not have separated?
could we not have separated?
could you not have separated?
could they not have separated? 	could I not have been separating?
could you not have been separating?
could she not have been separating?
could we not have been separating?
could you not have been separating?
could they not have been separating?