could unsnap
Regular verb: unsnap - unsnaped- unsnaped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could unsnap
you could unsnap
he could unsnap
we could unsnap
you could unsnap
they could unsnap 	I could be unsnaping
you could be unsnaping
he could be unsnaping
we could be unsnaping
you could be unsnaping
they could be unsnaping	I could have unsnaped
you could have unsnaped
he could have unsnaped
we could have unsnaped
you could have unsnaped
they could have unsnaped	I could have been unsnaping
you could have been unsnaping
he could have been unsnaping
we could have been unsnaping
you could have been unsnaping
they could have been unsnaping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't unsnap
you couldn't unsnap
he couldn't unsnap
we couldn't unsnap
you couldn't unsnap
they couldn't unsnap 	I couldn't be unsnaping
you couldn't be unsnaping
he couldn't be unsnaping
we couldn't be unsnaping
you couldn't be unsnaping
they couldn't be unsnaping	I couldn't have unsnaped
you couldn't have unsnaped
he couldn't have unsnaped
we couldn't have unsnaped
you couldn't have unsnaped
they couldn't have unsnaped	I couldn't have been unsnaping
you couldn't have been unsnaping
he couldn't have been unsnaping
we couldn't have been unsnaping
you couldn't have been unsnaping
they couldn't have been unsnaping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I unsnap?
could you unsnap?
could he unsnap?
could we unsnap?
could you unsnap?
could they unsnap? 	could I be unsnaping?
could you be unsnaping?
could he be unsnaping?
could we be unsnaping?
could you be unsnaping?
could they be unsnaping? 	could I have unsnaped?
could you have unsnaped?
could he have unsnaped?
could we have unsnaped?
could you have unsnaped?
could they have unsnaped? 	could I have been unsnaping?
could you have been unsnaping?
could he have been unsnaping?
could we have been unsnaping?
could you have been unsnaping?
could they have been unsnaping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I unsnap?
couldn't you unsnap?
couldn't he unsnap?
couldn't we unsnap?
couldn't you unsnap?
couldn't they unsnap? 	couldn't I be unsnaping?
couldn't you be unsnaping?
couldn't he be unsnaping?
couldn't we be unsnaping?
couldn't you be unsnaping?
couldn't they be unsnaping? 	couldn't I have unsnaped?
couldn't you have unsnaped?
couldn't he have unsnaped?
couldn't we have unsnaped?
couldn't you have unsnaped?
couldn't they have unsnaped? 	couldn't I have been unsnaping?
couldn't you have been unsnaping?
couldn't he have been unsnaping?
couldn't we have been unsnaping?
couldn't you have been unsnaping?
couldn't they have been unsnaping?