could confabulate
Regular verb: confabulate - confabulated- confabulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could confabulate
you could confabulate
she could confabulate
we could confabulate
you could confabulate
they could confabulate 	I could be confabulating
you could be confabulating
she could be confabulating
we could be confabulating
you could be confabulating
they could be confabulating	I could have confabulated
you could have confabulated
she could have confabulated
we could have confabulated
you could have confabulated
they could have confabulated	I could have been confabulating
you could have been confabulating
she could have been confabulating
we could have been confabulating
you could have been confabulating
they could have been confabulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't confabulate
you couldn't confabulate
she couldn't confabulate
we couldn't confabulate
you couldn't confabulate
they couldn't confabulate 	I couldn't be confabulating
you couldn't be confabulating
she couldn't be confabulating
we couldn't be confabulating
you couldn't be confabulating
they couldn't be confabulating	I couldn't have confabulated
you couldn't have confabulated
she couldn't have confabulated
we couldn't have confabulated
you couldn't have confabulated
they couldn't have confabulated	I couldn't have been confabulating
you couldn't have been confabulating
she couldn't have been confabulating
we couldn't have been confabulating
you couldn't have been confabulating
they couldn't have been confabulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I confabulate?
could you confabulate?
could she confabulate?
could we confabulate?
could you confabulate?
could they confabulate? 	could I be confabulating?
could you be confabulating?
could she be confabulating?
could we be confabulating?
could you be confabulating?
could they be confabulating? 	could I have confabulated?
could you have confabulated?
could she have confabulated?
could we have confabulated?
could you have confabulated?
could they have confabulated? 	could I have been confabulating?
could you have been confabulating?
could she have been confabulating?
could we have been confabulating?
could you have been confabulating?
could they have been confabulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I confabulate?
couldn't you confabulate?
couldn't she confabulate?
couldn't we confabulate?
couldn't you confabulate?
couldn't they confabulate? 	couldn't I be confabulating?
couldn't you be confabulating?
couldn't she be confabulating?
couldn't we be confabulating?
couldn't you be confabulating?
couldn't they be confabulating? 	couldn't I have confabulated?
couldn't you have confabulated?
couldn't she have confabulated?
couldn't we have confabulated?
couldn't you have confabulated?
couldn't they have confabulated? 	couldn't I have been confabulating?
couldn't you have been confabulating?
couldn't she have been confabulating?
couldn't we have been confabulating?
couldn't you have been confabulating?
couldn't they have been confabulating?