could assent
Regular verb: assent - assented- assented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could assent
you could assent
she could assent
we could assent
you could assent
they could assent 	I could be assenting
you could be assenting
she could be assenting
we could be assenting
you could be assenting
they could be assenting	I could have assented
you could have assented
she could have assented
we could have assented
you could have assented
they could have assented	I could have been assenting
you could have been assenting
she could have been assenting
we could have been assenting
you could have been assenting
they could have been assenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't assent
you couldn't assent
she couldn't assent
we couldn't assent
you couldn't assent
they couldn't assent 	I couldn't be assenting
you couldn't be assenting
she couldn't be assenting
we couldn't be assenting
you couldn't be assenting
they couldn't be assenting	I couldn't have assented
you couldn't have assented
she couldn't have assented
we couldn't have assented
you couldn't have assented
they couldn't have assented	I couldn't have been assenting
you couldn't have been assenting
she couldn't have been assenting
we couldn't have been assenting
you couldn't have been assenting
they couldn't have been assenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I assent?
could you assent?
could she assent?
could we assent?
could you assent?
could they assent? 	could I be assenting?
could you be assenting?
could she be assenting?
could we be assenting?
could you be assenting?
could they be assenting? 	could I have assented?
could you have assented?
could she have assented?
could we have assented?
could you have assented?
could they have assented? 	could I have been assenting?
could you have been assenting?
could she have been assenting?
could we have been assenting?
could you have been assenting?
could they have been assenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I assent?
couldn't you assent?
couldn't she assent?
couldn't we assent?
couldn't you assent?
couldn't they assent? 	couldn't I be assenting?
couldn't you be assenting?
couldn't she be assenting?
couldn't we be assenting?
couldn't you be assenting?
couldn't they be assenting? 	couldn't I have assented?
couldn't you have assented?
couldn't she have assented?
couldn't we have assented?
couldn't you have assented?
couldn't they have assented? 	couldn't I have been assenting?
couldn't you have been assenting?
couldn't she have been assenting?
couldn't we have been assenting?
couldn't you have been assenting?
couldn't they have been assenting?