could unmuzzle
Regular verb: unmuzzle - unmuzzled- unmuzzled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could unmuzzle
you could unmuzzle
he could unmuzzle
we could unmuzzle
you could unmuzzle
they could unmuzzle 	I could be unmuzzling
you could be unmuzzling
he could be unmuzzling
we could be unmuzzling
you could be unmuzzling
they could be unmuzzling	I could have unmuzzled
you could have unmuzzled
he could have unmuzzled
we could have unmuzzled
you could have unmuzzled
they could have unmuzzled	I could have been unmuzzling
you could have been unmuzzling
he could have been unmuzzling
we could have been unmuzzling
you could have been unmuzzling
they could have been unmuzzling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not unmuzzle
you could not unmuzzle
he could not unmuzzle
we could not unmuzzle
you could not unmuzzle
they could not unmuzzle 	I could not be unmuzzling
you could not be unmuzzling
he could not be unmuzzling
we could not be unmuzzling
you could not be unmuzzling
they could not be unmuzzling	I could not have unmuzzled
you could not have unmuzzled
he could not have unmuzzled
we could not have unmuzzled
you could not have unmuzzled
they could not have unmuzzled	I could not have been unmuzzling
you could not have been unmuzzling
he could not have been unmuzzling
we could not have been unmuzzling
you could not have been unmuzzling
they could not have been unmuzzling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I unmuzzle?
could you unmuzzle?
could he unmuzzle?
could we unmuzzle?
could you unmuzzle?
could they unmuzzle? 	could I be unmuzzling?
could you be unmuzzling?
could he be unmuzzling?
could we be unmuzzling?
could you be unmuzzling?
could they be unmuzzling? 	could I have unmuzzled?
could you have unmuzzled?
could he have unmuzzled?
could we have unmuzzled?
could you have unmuzzled?
could they have unmuzzled? 	could I have been unmuzzling?
could you have been unmuzzling?
could he have been unmuzzling?
could we have been unmuzzling?
could you have been unmuzzling?
could they have been unmuzzling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not unmuzzle?
could you not unmuzzle?
could he not unmuzzle?
could we not unmuzzle?
could you not unmuzzle?
could they not unmuzzle? 	could I not be unmuzzling?
could you not be unmuzzling?
could he not be unmuzzling?
could we not be unmuzzling?
could you not be unmuzzling?
could they not be unmuzzling? 	could I not have unmuzzled?
could you not have unmuzzled?
could he not have unmuzzled?
could we not have unmuzzled?
could you not have unmuzzled?
could they not have unmuzzled? 	could I not have been unmuzzling?
could you not have been unmuzzling?
could he not have been unmuzzling?
could we not have been unmuzzling?
could you not have been unmuzzling?
could they not have been unmuzzling?