English verb conjugation
COULD DEFAT

Regular verb: defat - defated - defated

Affirmation

Simple form	V-ing form
I could defat you could defat she could defat we could defat you could defat they could defat	I could be defating you could be defating she could be defating we could be defating you could be defating they could be defating
Perfect	V-ing perfect
I could have defated you could have defated she could have defated we could have defated you could have defated they could have defated	I could have been defating you could have been defating she could have been defating we could have been defating you could have been defating they could have been defating

Negation

Simple form	V-ing form
I couldn't defat you couldn't defat she couldn't defat we couldn't defat you couldn't defat they couldn't defat	I couldn't be defating you couldn't be defating she couldn't be defating we couldn't be defating you couldn't be defating they couldn't be defating
Perfect	V-ing perfect
I couldn't have defated you couldn't have defated she couldn't have defated we couldn't have defated you couldn't have defated they couldn't have defated	I couldn't have been defating you couldn't have been defating she couldn't have been defating we couldn't have been defating you couldn't have been defating they couldn't have been defating

Interrogative form

Simple form	V-ing form
could I defat? could you defat? could she defat? could we defat? could you defat? could they defat?	could I be defating? could you be defating? could she be defating? could we be defating? could you be defating? could they be defating?
Perfect	V-ing perfect
could I have defated? could you have defated? could she have defated? could we have defated? could you have defated? could they have defated?	could I have been defating? could you have been defating? could she have been defating? could we have been defating? could you have been defating? could they have been defating?

Interro-negative form

Simple form	V-ing form
couldn't I defat? couldn't you defat? couldn't she defat? couldn't we defat? couldn't you defat? couldn't they defat?	couldn't I be defating? couldn't you be defating? couldn't she be defating? couldn't we be defating? couldn't you be defating? couldn't they be defating?
Perfect	V-ing perfect
couldn't I have defated? couldn't you have defated? couldn't she have defated? couldn't we have defated? couldn't you have defated? couldn't they have defated?	couldn't I have been defating? couldn't you have been defating? couldn't she have been defating? couldn't we have been defating? couldn't you have been defating? couldn't they have been defating?