English verb conjugation
COULD UNSNAP

Regular verb: unsnap - unsnaped - unsnaped

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?