English verb conjugation
COULD NATTER

Regular verb: natter - nattered - nattered

Affirmation

Simple form	V-ing form
I could natter you could natter she could natter we could natter you could natter they could natter	I could be nattering you could be nattering she 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 she 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 she 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 she 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 she 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 she 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 she 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 she natter? could we natter? could you natter? could they natter?	could I be nattering? could you be nattering? could she 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 she 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 she 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 she 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 she 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 she 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 she have been nattering? couldn't we have been nattering? couldn't you have been nattering? couldn't they have been nattering?