English verb conjugation
COULD NATTER

Regular verb: natter - nattered - nattered

Affirmation

Simple form	V-ing form
I could natter you could natter he could natter we could natter you could natter they could natter	I could be nattering you could be nattering he could be nattering we could be nattering you could be nattering they could be nattering
Perfect	V-ing perfect
I could have nattered you could have nattered he could have nattered we could have nattered you could have nattered they could have nattered	I could have been nattering you could have been nattering he could have been nattering we could have been nattering you could have been nattering they could have been nattering

Negation

Simple form	V-ing form
I couldn't natter you couldn't natter he couldn't natter we couldn't natter you couldn't natter they couldn't natter	I couldn't be nattering you couldn't be nattering he couldn't be nattering we couldn't be nattering you couldn't be nattering they couldn't be nattering
Perfect	V-ing perfect
I couldn't have nattered you couldn't have nattered he couldn't have nattered we couldn't have nattered you couldn't have nattered they couldn't have nattered	I couldn't have been nattering you couldn't have been nattering he couldn't have been nattering we couldn't have been nattering you couldn't have been nattering they couldn't have been nattering

Interrogative form

Simple form	V-ing form
could I natter? could you natter? could he natter? could we natter? could you natter? could they natter?	could I be nattering? could you be nattering? could he be nattering? could we be nattering? could you be nattering? could they be nattering?
Perfect	V-ing perfect
could I have nattered? could you have nattered? could he have nattered? could we have nattered? could you have nattered? could they have nattered?	could I have been nattering? could you have been nattering? could he have been nattering? could we have been nattering? could you have been nattering? could they have been nattering?

Interro-negative form

Simple form	V-ing form
couldn't I natter? couldn't you natter? couldn't he natter? couldn't we natter? couldn't you natter? couldn't they natter?	couldn't I be nattering? couldn't you be nattering? couldn't he be nattering? couldn't we be nattering? couldn't you be nattering? couldn't they be nattering?
Perfect	V-ing perfect
couldn't I have nattered? couldn't you have nattered? couldn't he have nattered? couldn't we have nattered? couldn't you have nattered? couldn't they have nattered?	couldn't I have been nattering? couldn't you have been nattering? couldn't he have been nattering? couldn't we have been nattering? couldn't you have been nattering? couldn't they have been nattering?