could overlie
Irregular verb: overlie - overlay- overlain

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overlie
you could overlie
he could overlie
we could overlie
you could overlie
they could overlie 	I could be overlying
you could be overlying
he could be overlying
we could be overlying
you could be overlying
they could be overlying	I could have overlain
you could have overlain
he could have overlain
we could have overlain
you could have overlain
they could have overlain	I could have been overlying
you could have been overlying
he could have been overlying
we could have been overlying
you could have been overlying
they could have been overlying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overlie
you couldn't overlie
he couldn't overlie
we couldn't overlie
you couldn't overlie
they couldn't overlie 	I couldn't be overlying
you couldn't be overlying
he couldn't be overlying
we couldn't be overlying
you couldn't be overlying
they couldn't be overlying	I couldn't have overlain
you couldn't have overlain
he couldn't have overlain
we couldn't have overlain
you couldn't have overlain
they couldn't have overlain	I couldn't have been overlying
you couldn't have been overlying
he couldn't have been overlying
we couldn't have been overlying
you couldn't have been overlying
they couldn't have been overlying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overlie?
could you overlie?
could he overlie?
could we overlie?
could you overlie?
could they overlie? 	could I be overlying?
could you be overlying?
could he be overlying?
could we be overlying?
could you be overlying?
could they be overlying? 	could I have overlain?
could you have overlain?
could he have overlain?
could we have overlain?
could you have overlain?
could they have overlain? 	could I have been overlying?
could you have been overlying?
could he have been overlying?
could we have been overlying?
could you have been overlying?
could they have been overlying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overlie?
couldn't you overlie?
couldn't he overlie?
couldn't we overlie?
couldn't you overlie?
couldn't they overlie? 	couldn't I be overlying?
couldn't you be overlying?
couldn't he be overlying?
couldn't we be overlying?
couldn't you be overlying?
couldn't they be overlying? 	couldn't I have overlain?
couldn't you have overlain?
couldn't he have overlain?
couldn't we have overlain?
couldn't you have overlain?
couldn't they have overlain? 	couldn't I have been overlying?
couldn't you have been overlying?
couldn't he have been overlying?
couldn't we have been overlying?
couldn't you have been overlying?
couldn't they have been overlying?