English verb conjugation
COULD CORN

Regular verb: corn - corned - corned

Affirmation

Simple form	V-ing form
I could corn you could corn she could corn we could corn you could corn they could corn	I could be corning you could be corning she could be corning we could be corning you could be corning they could be corning
Perfect	V-ing perfect
I could have corned you could have corned she could have corned we could have corned you could have corned they could have corned	I could have been corning you could have been corning she could have been corning we could have been corning you could have been corning they could have been corning

Negation

Simple form	V-ing form
I couldn't corn you couldn't corn she couldn't corn we couldn't corn you couldn't corn they couldn't corn	I couldn't be corning you couldn't be corning she couldn't be corning we couldn't be corning you couldn't be corning they couldn't be corning
Perfect	V-ing perfect
I couldn't have corned you couldn't have corned she couldn't have corned we couldn't have corned you couldn't have corned they couldn't have corned	I couldn't have been corning you couldn't have been corning she couldn't have been corning we couldn't have been corning you couldn't have been corning they couldn't have been corning

Interrogative form

Simple form	V-ing form
could I corn? could you corn? could she corn? could we corn? could you corn? could they corn?	could I be corning? could you be corning? could she be corning? could we be corning? could you be corning? could they be corning?
Perfect	V-ing perfect
could I have corned? could you have corned? could she have corned? could we have corned? could you have corned? could they have corned?	could I have been corning? could you have been corning? could she have been corning? could we have been corning? could you have been corning? could they have been corning?

Interro-negative form

Simple form	V-ing form
couldn't I corn? couldn't you corn? couldn't she corn? couldn't we corn? couldn't you corn? couldn't they corn?	couldn't I be corning? couldn't you be corning? couldn't she be corning? couldn't we be corning? couldn't you be corning? couldn't they be corning?
Perfect	V-ing perfect
couldn't I have corned? couldn't you have corned? couldn't she have corned? couldn't we have corned? couldn't you have corned? couldn't they have corned?	couldn't I have been corning? couldn't you have been corning? couldn't she have been corning? couldn't we have been corning? couldn't you have been corning? couldn't they have been corning?