English verb conjugation
COULD FEATHER

Regular verb: feather - feathered - feathered

Affirmation

Simple form	V-ing form
I could feather you could feather she could feather we could feather you could feather they could feather	I could be feathering you could be feathering she could be feathering we could be feathering you could be feathering they could be feathering
Perfect	V-ing perfect
I could have feathered you could have feathered she could have feathered we could have feathered you could have feathered they could have feathered	I could have been feathering you could have been feathering she could have been feathering we could have been feathering you could have been feathering they could have been feathering

Negation

Simple form	V-ing form
I couldn't feather you couldn't feather she couldn't feather we couldn't feather you couldn't feather they couldn't feather	I couldn't be feathering you couldn't be feathering she couldn't be feathering we couldn't be feathering you couldn't be feathering they couldn't be feathering
Perfect	V-ing perfect
I couldn't have feathered you couldn't have feathered she couldn't have feathered we couldn't have feathered you couldn't have feathered they couldn't have feathered	I couldn't have been feathering you couldn't have been feathering she couldn't have been feathering we couldn't have been feathering you couldn't have been feathering they couldn't have been feathering

Interrogative form

Simple form	V-ing form
could I feather? could you feather? could she feather? could we feather? could you feather? could they feather?	could I be feathering? could you be feathering? could she be feathering? could we be feathering? could you be feathering? could they be feathering?
Perfect	V-ing perfect
could I have feathered? could you have feathered? could she have feathered? could we have feathered? could you have feathered? could they have feathered?	could I have been feathering? could you have been feathering? could she have been feathering? could we have been feathering? could you have been feathering? could they have been feathering?

Interro-negative form

Simple form	V-ing form
couldn't I feather? couldn't you feather? couldn't she feather? couldn't we feather? couldn't you feather? couldn't they feather?	couldn't I be feathering? couldn't you be feathering? couldn't she be feathering? couldn't we be feathering? couldn't you be feathering? couldn't they be feathering?
Perfect	V-ing perfect
couldn't I have feathered? couldn't you have feathered? couldn't she have feathered? couldn't we have feathered? couldn't you have feathered? couldn't they have feathered?	couldn't I have been feathering? couldn't you have been feathering? couldn't she have been feathering? couldn't we have been feathering? couldn't you have been feathering? couldn't they have been feathering?