can curtail
Regular verb: curtail - curtailed- curtailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can curtail
you can curtail
she can curtail
we can curtail
you can curtail
they can curtail 	I can be curtailing
you can be curtailing
she can be curtailing
we can be curtailing
you can be curtailing
they can be curtailing	I can have curtailed
you can have curtailed
she can have curtailed
we can have curtailed
you can have curtailed
they can have curtailed	I can have been curtailing
you can have been curtailing
she can have been curtailing
we can have been curtailing
you can have been curtailing
they can have been curtailing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't curtail
you can't curtail
she can't curtail
we can't curtail
you can't curtail
they can't curtail 	I can't be curtailing
you can't be curtailing
she can't be curtailing
we can't be curtailing
you can't be curtailing
they can't be curtailing	I can't have curtailed
you can't have curtailed
she can't have curtailed
we can't have curtailed
you can't have curtailed
they can't have curtailed	I can't have been curtailing
you can't have been curtailing
she can't have been curtailing
we can't have been curtailing
you can't have been curtailing
they can't have been curtailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I curtail?
can you curtail?
can she curtail?
can we curtail?
can you curtail?
can they curtail? 	can I be curtailing?
can you be curtailing?
can she be curtailing?
can we be curtailing?
can you be curtailing?
can they be curtailing? 	can I have curtailed?
can you have curtailed?
can she have curtailed?
can we have curtailed?
can you have curtailed?
can they have curtailed? 	can I have been curtailing?
can you have been curtailing?
can she have been curtailing?
can we have been curtailing?
can you have been curtailing?
can they have been curtailing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I curtail?
can't you curtail?
can't she curtail?
can't we curtail?
can't you curtail?
can't they curtail? 	can't I be curtailing?
can't you be curtailing?
can't she be curtailing?
can't we be curtailing?
can't you be curtailing?
can't they be curtailing? 	can't I have curtailed?
can't you have curtailed?
can't she have curtailed?
can't we have curtailed?
can't you have curtailed?
can't they have curtailed? 	can't I have been curtailing?
can't you have been curtailing?
can't she have been curtailing?
can't we have been curtailing?
can't you have been curtailing?
can't they have been curtailing?