English verb conjugation
COULD UNLIMBER

Regular verb: unlimber - unlimbered - unlimbered

Affirmation

Simple form	V-ing form
I could unlimber you could unlimber she could unlimber we could unlimber you could unlimber they could unlimber	I could be unlimbering you could be unlimbering she could be unlimbering we could be unlimbering you could be unlimbering they could be unlimbering
Perfect	V-ing perfect
I could have unlimbered you could have unlimbered she could have unlimbered we could have unlimbered you could have unlimbered they could have unlimbered	I could have been unlimbering you could have been unlimbering she could have been unlimbering we could have been unlimbering you could have been unlimbering they could have been unlimbering

Negation

Simple form	V-ing form
I couldn't unlimber you couldn't unlimber she couldn't unlimber we couldn't unlimber you couldn't unlimber they couldn't unlimber	I couldn't be unlimbering you couldn't be unlimbering she couldn't be unlimbering we couldn't be unlimbering you couldn't be unlimbering they couldn't be unlimbering
Perfect	V-ing perfect
I couldn't have unlimbered you couldn't have unlimbered she couldn't have unlimbered we couldn't have unlimbered you couldn't have unlimbered they couldn't have unlimbered	I couldn't have been unlimbering you couldn't have been unlimbering she couldn't have been unlimbering we couldn't have been unlimbering you couldn't have been unlimbering they couldn't have been unlimbering

Interrogative form

Simple form	V-ing form
could I unlimber? could you unlimber? could she unlimber? could we unlimber? could you unlimber? could they unlimber?	could I be unlimbering? could you be unlimbering? could she be unlimbering? could we be unlimbering? could you be unlimbering? could they be unlimbering?
Perfect	V-ing perfect
could I have unlimbered? could you have unlimbered? could she have unlimbered? could we have unlimbered? could you have unlimbered? could they have unlimbered?	could I have been unlimbering? could you have been unlimbering? could she have been unlimbering? could we have been unlimbering? could you have been unlimbering? could they have been unlimbering?

Interro-negative form

Simple form	V-ing form
couldn't I unlimber? couldn't you unlimber? couldn't she unlimber? couldn't we unlimber? couldn't you unlimber? couldn't they unlimber?	couldn't I be unlimbering? couldn't you be unlimbering? couldn't she be unlimbering? couldn't we be unlimbering? couldn't you be unlimbering? couldn't they be unlimbering?
Perfect	V-ing perfect
couldn't I have unlimbered? couldn't you have unlimbered? couldn't she have unlimbered? couldn't we have unlimbered? couldn't you have unlimbered? couldn't they have unlimbered?	couldn't I have been unlimbering? couldn't you have been unlimbering? couldn't she have been unlimbering? couldn't we have been unlimbering? couldn't you have been unlimbering? couldn't they have been unlimbering?