could defense
Regular verb: defense - defensed- defensed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could defense
you could defense
he could defense
we could defense
you could defense
they could defense 	I could be defensing
you could be defensing
he could be defensing
we could be defensing
you could be defensing
they could be defensing	I could have defensed
you could have defensed
he could have defensed
we could have defensed
you could have defensed
they could have defensed	I could have been defensing
you could have been defensing
he could have been defensing
we could have been defensing
you could have been defensing
they could have been defensing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't defense
you couldn't defense
he couldn't defense
we couldn't defense
you couldn't defense
they couldn't defense 	I couldn't be defensing
you couldn't be defensing
he couldn't be defensing
we couldn't be defensing
you couldn't be defensing
they couldn't be defensing	I couldn't have defensed
you couldn't have defensed
he couldn't have defensed
we couldn't have defensed
you couldn't have defensed
they couldn't have defensed	I couldn't have been defensing
you couldn't have been defensing
he couldn't have been defensing
we couldn't have been defensing
you couldn't have been defensing
they couldn't have been defensing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I defense?
could you defense?
could he defense?
could we defense?
could you defense?
could they defense? 	could I be defensing?
could you be defensing?
could he be defensing?
could we be defensing?
could you be defensing?
could they be defensing? 	could I have defensed?
could you have defensed?
could he have defensed?
could we have defensed?
could you have defensed?
could they have defensed? 	could I have been defensing?
could you have been defensing?
could he have been defensing?
could we have been defensing?
could you have been defensing?
could they have been defensing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I defense?
couldn't you defense?
couldn't he defense?
couldn't we defense?
couldn't you defense?
couldn't they defense? 	couldn't I be defensing?
couldn't you be defensing?
couldn't he be defensing?
couldn't we be defensing?
couldn't you be defensing?
couldn't they be defensing? 	couldn't I have defensed?
couldn't you have defensed?
couldn't he have defensed?
couldn't we have defensed?
couldn't you have defensed?
couldn't they have defensed? 	couldn't I have been defensing?
couldn't you have been defensing?
couldn't he have been defensing?
couldn't we have been defensing?
couldn't you have been defensing?
couldn't they have been defensing?