can underlie
Irregular verb: underlie - underlay- underlain

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can underlie
you can underlie
she can underlie
we can underlie
you can underlie
they can underlie 	I can be underlying
you can be underlying
she can be underlying
we can be underlying
you can be underlying
they can be underlying	I can have underlain
you can have underlain
she can have underlain
we can have underlain
you can have underlain
they can have underlain	I can have been underlying
you can have been underlying
she can have been underlying
we can have been underlying
you can have been underlying
they can have been underlying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot underlie
you cannot underlie
she cannot underlie
we cannot underlie
you cannot underlie
they cannot underlie 	I cannot be underlying
you cannot be underlying
she cannot be underlying
we cannot be underlying
you cannot be underlying
they cannot be underlying	I cannot have underlain
you cannot have underlain
she cannot have underlain
we cannot have underlain
you cannot have underlain
they cannot have underlain	I cannot have been underlying
you cannot have been underlying
she cannot have been underlying
we cannot have been underlying
you cannot have been underlying
they cannot have been underlying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I underlie?
can you underlie?
can she underlie?
can we underlie?
can you underlie?
can they underlie? 	can I be underlying?
can you be underlying?
can she be underlying?
can we be underlying?
can you be underlying?
can they be underlying? 	can I have underlain?
can you have underlain?
can she have underlain?
can we have underlain?
can you have underlain?
can they have underlain? 	can I have been underlying?
can you have been underlying?
can she have been underlying?
can we have been underlying?
can you have been underlying?
can they have been underlying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not underlie?
can you not underlie?
can she not underlie?
can we not underlie?
can you not underlie?
can they not underlie? 	can I not be underlying?
can you not be underlying?
can she not be underlying?
can we not be underlying?
can you not be underlying?
can they not be underlying? 	can I not have underlain?
can you not have underlain?
can she not have underlain?
can we not have underlain?
can you not have underlain?
can they not have underlain? 	can I not have been underlying?
can you not have been underlying?
can she not have been underlying?
can we not have been underlying?
can you not have been underlying?
can they not have been underlying?