English verb conjugation
COULD CHAMFER

Regular verb: chamfer - chamfered - chamfered

Affirmation

Simple form	V-ing form
I could chamfer you could chamfer he could chamfer we could chamfer you could chamfer they could chamfer	I could be chamfering you could be chamfering he could be chamfering we could be chamfering you could be chamfering they could be chamfering
Perfect	V-ing perfect
I could have chamfered you could have chamfered he could have chamfered we could have chamfered you could have chamfered they could have chamfered	I could have been chamfering you could have been chamfering he could have been chamfering we could have been chamfering you could have been chamfering they could have been chamfering

Negation

Simple form	V-ing form
I couldn't chamfer you couldn't chamfer he couldn't chamfer we couldn't chamfer you couldn't chamfer they couldn't chamfer	I couldn't be chamfering you couldn't be chamfering he couldn't be chamfering we couldn't be chamfering you couldn't be chamfering they couldn't be chamfering
Perfect	V-ing perfect
I couldn't have chamfered you couldn't have chamfered he couldn't have chamfered we couldn't have chamfered you couldn't have chamfered they couldn't have chamfered	I couldn't have been chamfering you couldn't have been chamfering he couldn't have been chamfering we couldn't have been chamfering you couldn't have been chamfering they couldn't have been chamfering

Interrogative form

Simple form	V-ing form
could I chamfer? could you chamfer? could he chamfer? could we chamfer? could you chamfer? could they chamfer?	could I be chamfering? could you be chamfering? could he be chamfering? could we be chamfering? could you be chamfering? could they be chamfering?
Perfect	V-ing perfect
could I have chamfered? could you have chamfered? could he have chamfered? could we have chamfered? could you have chamfered? could they have chamfered?	could I have been chamfering? could you have been chamfering? could he have been chamfering? could we have been chamfering? could you have been chamfering? could they have been chamfering?

Interro-negative form

Simple form	V-ing form
couldn't I chamfer? couldn't you chamfer? couldn't he chamfer? couldn't we chamfer? couldn't you chamfer? couldn't they chamfer?	couldn't I be chamfering? couldn't you be chamfering? couldn't he be chamfering? couldn't we be chamfering? couldn't you be chamfering? couldn't they be chamfering?
Perfect	V-ing perfect
couldn't I have chamfered? couldn't you have chamfered? couldn't he have chamfered? couldn't we have chamfered? couldn't you have chamfered? couldn't they have chamfered?	couldn't I have been chamfering? couldn't you have been chamfering? couldn't he have been chamfering? couldn't we have been chamfering? couldn't you have been chamfering? couldn't they have been chamfering?