could defang
Regular verb: defang - defanged- defanged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could defang
you could defang
she could defang
we could defang
you could defang
they could defang 	I could be defanging
you could be defanging
she could be defanging
we could be defanging
you could be defanging
they could be defanging	I could have defanged
you could have defanged
she could have defanged
we could have defanged
you could have defanged
they could have defanged	I could have been defanging
you could have been defanging
she could have been defanging
we could have been defanging
you could have been defanging
they could have been defanging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't defang
you couldn't defang
she couldn't defang
we couldn't defang
you couldn't defang
they couldn't defang 	I couldn't be defanging
you couldn't be defanging
she couldn't be defanging
we couldn't be defanging
you couldn't be defanging
they couldn't be defanging	I couldn't have defanged
you couldn't have defanged
she couldn't have defanged
we couldn't have defanged
you couldn't have defanged
they couldn't have defanged	I couldn't have been defanging
you couldn't have been defanging
she couldn't have been defanging
we couldn't have been defanging
you couldn't have been defanging
they couldn't have been defanging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I defang?
could you defang?
could she defang?
could we defang?
could you defang?
could they defang? 	could I be defanging?
could you be defanging?
could she be defanging?
could we be defanging?
could you be defanging?
could they be defanging? 	could I have defanged?
could you have defanged?
could she have defanged?
could we have defanged?
could you have defanged?
could they have defanged? 	could I have been defanging?
could you have been defanging?
could she have been defanging?
could we have been defanging?
could you have been defanging?
could they have been defanging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I defang?
couldn't you defang?
couldn't she defang?
couldn't we defang?
couldn't you defang?
couldn't they defang? 	couldn't I be defanging?
couldn't you be defanging?
couldn't she be defanging?
couldn't we be defanging?
couldn't you be defanging?
couldn't they be defanging? 	couldn't I have defanged?
couldn't you have defanged?
couldn't she have defanged?
couldn't we have defanged?
couldn't you have defanged?
couldn't they have defanged? 	couldn't I have been defanging?
couldn't you have been defanging?
couldn't she have been defanging?
couldn't we have been defanging?
couldn't you have been defanging?
couldn't they have been defanging?