could deform
Regular verb: deform - deformed- deformed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could deform
you could deform
she could deform
we could deform
you could deform
they could deform 	I could be deforming
you could be deforming
she could be deforming
we could be deforming
you could be deforming
they could be deforming	I could have deformed
you could have deformed
she could have deformed
we could have deformed
you could have deformed
they could have deformed	I could have been deforming
you could have been deforming
she could have been deforming
we could have been deforming
you could have been deforming
they could have been deforming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't deform
you couldn't deform
she couldn't deform
we couldn't deform
you couldn't deform
they couldn't deform 	I couldn't be deforming
you couldn't be deforming
she couldn't be deforming
we couldn't be deforming
you couldn't be deforming
they couldn't be deforming	I couldn't have deformed
you couldn't have deformed
she couldn't have deformed
we couldn't have deformed
you couldn't have deformed
they couldn't have deformed	I couldn't have been deforming
you couldn't have been deforming
she couldn't have been deforming
we couldn't have been deforming
you couldn't have been deforming
they couldn't have been deforming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I deform?
could you deform?
could she deform?
could we deform?
could you deform?
could they deform? 	could I be deforming?
could you be deforming?
could she be deforming?
could we be deforming?
could you be deforming?
could they be deforming? 	could I have deformed?
could you have deformed?
could she have deformed?
could we have deformed?
could you have deformed?
could they have deformed? 	could I have been deforming?
could you have been deforming?
could she have been deforming?
could we have been deforming?
could you have been deforming?
could they have been deforming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I deform?
couldn't you deform?
couldn't she deform?
couldn't we deform?
couldn't you deform?
couldn't they deform? 	couldn't I be deforming?
couldn't you be deforming?
couldn't she be deforming?
couldn't we be deforming?
couldn't you be deforming?
couldn't they be deforming? 	couldn't I have deformed?
couldn't you have deformed?
couldn't she have deformed?
couldn't we have deformed?
couldn't you have deformed?
couldn't they have deformed? 	couldn't I have been deforming?
couldn't you have been deforming?
couldn't she have been deforming?
couldn't we have been deforming?
couldn't you have been deforming?
couldn't they have been deforming?