can lament
Regular verb: lament - lamented- lamented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can lament
you can lament
she can lament
we can lament
you can lament
they can lament 	I can be lamenting
you can be lamenting
she can be lamenting
we can be lamenting
you can be lamenting
they can be lamenting	I can have lamented
you can have lamented
she can have lamented
we can have lamented
you can have lamented
they can have lamented	I can have been lamenting
you can have been lamenting
she can have been lamenting
we can have been lamenting
you can have been lamenting
they can have been lamenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot lament
you cannot lament
she cannot lament
we cannot lament
you cannot lament
they cannot lament 	I cannot be lamenting
you cannot be lamenting
she cannot be lamenting
we cannot be lamenting
you cannot be lamenting
they cannot be lamenting	I cannot have lamented
you cannot have lamented
she cannot have lamented
we cannot have lamented
you cannot have lamented
they cannot have lamented	I cannot have been lamenting
you cannot have been lamenting
she cannot have been lamenting
we cannot have been lamenting
you cannot have been lamenting
they cannot have been lamenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I lament?
can you lament?
can she lament?
can we lament?
can you lament?
can they lament? 	can I be lamenting?
can you be lamenting?
can she be lamenting?
can we be lamenting?
can you be lamenting?
can they be lamenting? 	can I have lamented?
can you have lamented?
can she have lamented?
can we have lamented?
can you have lamented?
can they have lamented? 	can I have been lamenting?
can you have been lamenting?
can she have been lamenting?
can we have been lamenting?
can you have been lamenting?
can they have been lamenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not lament?
can you not lament?
can she not lament?
can we not lament?
can you not lament?
can they not lament? 	can I not be lamenting?
can you not be lamenting?
can she not be lamenting?
can we not be lamenting?
can you not be lamenting?
can they not be lamenting? 	can I not have lamented?
can you not have lamented?
can she not have lamented?
can we not have lamented?
can you not have lamented?
can they not have lamented? 	can I not have been lamenting?
can you not have been lamenting?
can she not have been lamenting?
can we not have been lamenting?
can you not have been lamenting?
can they not have been lamenting?