English verb conjugation
COULD BLETHER

Regular verb: blether - blethered - blethered

Affirmation

Simple form	V-ing form
I could blether you could blether he could blether we could blether you could blether they could blether	I could be blethering you could be blethering he could be blethering we could be blethering you could be blethering they could be blethering
Perfect	V-ing perfect
I could have blethered you could have blethered he could have blethered we could have blethered you could have blethered they could have blethered	I could have been blethering you could have been blethering he could have been blethering we could have been blethering you could have been blethering they could have been blethering

Negation

Simple form	V-ing form
I could not blether you could not blether he could not blether we could not blether you could not blether they could not blether	I could not be blethering you could not be blethering he could not be blethering we could not be blethering you could not be blethering they could not be blethering
Perfect	V-ing perfect
I could not have blethered you could not have blethered he could not have blethered we could not have blethered you could not have blethered they could not have blethered	I could not have been blethering you could not have been blethering he could not have been blethering we could not have been blethering you could not have been blethering they could not have been blethering

Interrogative form

Simple form	V-ing form
could I blether? could you blether? could he blether? could we blether? could you blether? could they blether?	could I be blethering? could you be blethering? could he be blethering? could we be blethering? could you be blethering? could they be blethering?
Perfect	V-ing perfect
could I have blethered? could you have blethered? could he have blethered? could we have blethered? could you have blethered? could they have blethered?	could I have been blethering? could you have been blethering? could he have been blethering? could we have been blethering? could you have been blethering? could they have been blethering?

Interro-negative form

Simple form	V-ing form
could I not blether? could you not blether? could he not blether? could we not blether? could you not blether? could they not blether?	could I not be blethering? could you not be blethering? could he not be blethering? could we not be blethering? could you not be blethering? could they not be blethering?
Perfect	V-ing perfect
could I not have blethered? could you not have blethered? could he not have blethered? could we not have blethered? could you not have blethered? could they not have blethered?	could I not have been blethering? could you not have been blethering? could he not have been blethering? could we not have been blethering? could you not have been blethering? could they not have been blethering?