can calve
Regular verb: calve - calved- calved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can calve
you can calve
she can calve
we can calve
you can calve
they can calve 	I can be calving
you can be calving
she can be calving
we can be calving
you can be calving
they can be calving	I can have calved
you can have calved
she can have calved
we can have calved
you can have calved
they can have calved	I can have been calving
you can have been calving
she can have been calving
we can have been calving
you can have been calving
they can have been calving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't calve
you can't calve
she can't calve
we can't calve
you can't calve
they can't calve 	I can't be calving
you can't be calving
she can't be calving
we can't be calving
you can't be calving
they can't be calving	I can't have calved
you can't have calved
she can't have calved
we can't have calved
you can't have calved
they can't have calved	I can't have been calving
you can't have been calving
she can't have been calving
we can't have been calving
you can't have been calving
they can't have been calving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I calve?
can you calve?
can she calve?
can we calve?
can you calve?
can they calve? 	can I be calving?
can you be calving?
can she be calving?
can we be calving?
can you be calving?
can they be calving? 	can I have calved?
can you have calved?
can she have calved?
can we have calved?
can you have calved?
can they have calved? 	can I have been calving?
can you have been calving?
can she have been calving?
can we have been calving?
can you have been calving?
can they have been calving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I calve?
can't you calve?
can't she calve?
can't we calve?
can't you calve?
can't they calve? 	can't I be calving?
can't you be calving?
can't she be calving?
can't we be calving?
can't you be calving?
can't they be calving? 	can't I have calved?
can't you have calved?
can't she have calved?
can't we have calved?
can't you have calved?
can't they have calved? 	can't I have been calving?
can't you have been calving?
can't she have been calving?
can't we have been calving?
can't you have been calving?
can't they have been calving?