could defibrinate
Regular verb: defibrinate - defibrinated- defibrinated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could defibrinate
you could defibrinate
she could defibrinate
we could defibrinate
you could defibrinate
they could defibrinate 	I could be defibrinating
you could be defibrinating
she could be defibrinating
we could be defibrinating
you could be defibrinating
they could be defibrinating	I could have defibrinated
you could have defibrinated
she could have defibrinated
we could have defibrinated
you could have defibrinated
they could have defibrinated	I could have been defibrinating
you could have been defibrinating
she could have been defibrinating
we could have been defibrinating
you could have been defibrinating
they could have been defibrinating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't defibrinate
you couldn't defibrinate
she couldn't defibrinate
we couldn't defibrinate
you couldn't defibrinate
they couldn't defibrinate 	I couldn't be defibrinating
you couldn't be defibrinating
she couldn't be defibrinating
we couldn't be defibrinating
you couldn't be defibrinating
they couldn't be defibrinating	I couldn't have defibrinated
you couldn't have defibrinated
she couldn't have defibrinated
we couldn't have defibrinated
you couldn't have defibrinated
they couldn't have defibrinated	I couldn't have been defibrinating
you couldn't have been defibrinating
she couldn't have been defibrinating
we couldn't have been defibrinating
you couldn't have been defibrinating
they couldn't have been defibrinating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I defibrinate?
could you defibrinate?
could she defibrinate?
could we defibrinate?
could you defibrinate?
could they defibrinate? 	could I be defibrinating?
could you be defibrinating?
could she be defibrinating?
could we be defibrinating?
could you be defibrinating?
could they be defibrinating? 	could I have defibrinated?
could you have defibrinated?
could she have defibrinated?
could we have defibrinated?
could you have defibrinated?
could they have defibrinated? 	could I have been defibrinating?
could you have been defibrinating?
could she have been defibrinating?
could we have been defibrinating?
could you have been defibrinating?
could they have been defibrinating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I defibrinate?
couldn't you defibrinate?
couldn't she defibrinate?
couldn't we defibrinate?
couldn't you defibrinate?
couldn't they defibrinate? 	couldn't I be defibrinating?
couldn't you be defibrinating?
couldn't she be defibrinating?
couldn't we be defibrinating?
couldn't you be defibrinating?
couldn't they be defibrinating? 	couldn't I have defibrinated?
couldn't you have defibrinated?
couldn't she have defibrinated?
couldn't we have defibrinated?
couldn't you have defibrinated?
couldn't they have defibrinated? 	couldn't I have been defibrinating?
couldn't you have been defibrinating?
couldn't she have been defibrinating?
couldn't we have been defibrinating?
couldn't you have been defibrinating?
couldn't they have been defibrinating?