English verb conjugation
COULD SUN

Regular verb: sun - sunned - sunned

Affirmation

Simple form	V-ing form
I could sun you could sun she could sun we could sun you could sun they could sun	I could be sunning you could be sunning she could be sunning we could be sunning you could be sunning they could be sunning
Perfect	V-ing perfect
I could have sunned you could have sunned she could have sunned we could have sunned you could have sunned they could have sunned	I could have been sunning you could have been sunning she could have been sunning we could have been sunning you could have been sunning they could have been sunning

Negation

Simple form	V-ing form
I couldn't sun you couldn't sun she couldn't sun we couldn't sun you couldn't sun they couldn't sun	I couldn't be sunning you couldn't be sunning she couldn't be sunning we couldn't be sunning you couldn't be sunning they couldn't be sunning
Perfect	V-ing perfect
I couldn't have sunned you couldn't have sunned she couldn't have sunned we couldn't have sunned you couldn't have sunned they couldn't have sunned	I couldn't have been sunning you couldn't have been sunning she couldn't have been sunning we couldn't have been sunning you couldn't have been sunning they couldn't have been sunning

Interrogative form

Simple form	V-ing form
could I sun? could you sun? could she sun? could we sun? could you sun? could they sun?	could I be sunning? could you be sunning? could she be sunning? could we be sunning? could you be sunning? could they be sunning?
Perfect	V-ing perfect
could I have sunned? could you have sunned? could she have sunned? could we have sunned? could you have sunned? could they have sunned?	could I have been sunning? could you have been sunning? could she have been sunning? could we have been sunning? could you have been sunning? could they have been sunning?

Interro-negative form

Simple form	V-ing form
couldn't I sun? couldn't you sun? couldn't she sun? couldn't we sun? couldn't you sun? couldn't they sun?	couldn't I be sunning? couldn't you be sunning? couldn't she be sunning? couldn't we be sunning? couldn't you be sunning? couldn't they be sunning?
Perfect	V-ing perfect
couldn't I have sunned? couldn't you have sunned? couldn't she have sunned? couldn't we have sunned? couldn't you have sunned? couldn't they have sunned?	couldn't I have been sunning? couldn't you have been sunning? couldn't she have been sunning? couldn't we have been sunning? couldn't you have been sunning? couldn't they have been sunning?