English verb conjugation
COULD SUN

Regular verb: sun - sunned - sunned

Affirmation

Simple form	V-ing form
I could sun you could sun he could sun we could sun you could sun they could sun	I could be sunning you could be sunning he 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 he 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 he 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 could not sun you could not sun he could not sun we could not sun you could not sun they could not sun	I could not be sunning you could not be sunning he could not be sunning we could not be sunning you could not be sunning they could not be sunning
Perfect	V-ing perfect
I could not have sunned you could not have sunned he could not have sunned we could not have sunned you could not have sunned they could not have sunned	I could not have been sunning you could not have been sunning he could not have been sunning we could not have been sunning you could not have been sunning they could not have been sunning

Interrogative form

Simple form	V-ing form
could I sun? could you sun? could he sun? could we sun? could you sun? could they sun?	could I be sunning? could you be sunning? could he 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 he 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 he 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
could I not sun? could you not sun? could he not sun? could we not sun? could you not sun? could they not sun?	could I not be sunning? could you not be sunning? could he not be sunning? could we not be sunning? could you not be sunning? could they not be sunning?
Perfect	V-ing perfect
could I not have sunned? could you not have sunned? could he not have sunned? could we not have sunned? could you not have sunned? could they not have sunned?	could I not have been sunning? could you not have been sunning? could he not have been sunning? could we not have been sunning? could you not have been sunning? could they not have been sunning?