English verb conjugation
COULD OD

Regular verb: od - oded - oded

Affirmation

Simple form	V-ing form
I could od you could od she could od we could od you could od they could od	I could be oding you could be oding she could be oding we could be oding you could be oding they could be oding
Perfect	V-ing perfect
I could have oded you could have oded she could have oded we could have oded you could have oded they could have oded	I could have been oding you could have been oding she could have been oding we could have been oding you could have been oding they could have been oding

Negation

Simple form	V-ing form
I couldn't od you couldn't od she couldn't od we couldn't od you couldn't od they couldn't od	I couldn't be oding you couldn't be oding she couldn't be oding we couldn't be oding you couldn't be oding they couldn't be oding
Perfect	V-ing perfect
I couldn't have oded you couldn't have oded she couldn't have oded we couldn't have oded you couldn't have oded they couldn't have oded	I couldn't have been oding you couldn't have been oding she couldn't have been oding we couldn't have been oding you couldn't have been oding they couldn't have been oding

Interrogative form

Simple form	V-ing form
could I od? could you od? could she od? could we od? could you od? could they od?	could I be oding? could you be oding? could she be oding? could we be oding? could you be oding? could they be oding?
Perfect	V-ing perfect
could I have oded? could you have oded? could she have oded? could we have oded? could you have oded? could they have oded?	could I have been oding? could you have been oding? could she have been oding? could we have been oding? could you have been oding? could they have been oding?

Interro-negative form

Simple form	V-ing form
couldn't I od? couldn't you od? couldn't she od? couldn't we od? couldn't you od? couldn't they od?	couldn't I be oding? couldn't you be oding? couldn't she be oding? couldn't we be oding? couldn't you be oding? couldn't they be oding?
Perfect	V-ing perfect
couldn't I have oded? couldn't you have oded? couldn't she have oded? couldn't we have oded? couldn't you have oded? couldn't they have oded?	couldn't I have been oding? couldn't you have been oding? couldn't she have been oding? couldn't we have been oding? couldn't you have been oding? couldn't they have been oding?