could natter
Regular verb: natter - nattered- nattered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?