English verb conjugation
COULD OVERILLUSTRATE

Regular verb: overillustrate - overillustrated - overillustrated

Affirmation

Simple form	V-ing form
I could overillustrate you could overillustrate he could overillustrate we could overillustrate you could overillustrate they could overillustrate	I could be overillustrating you could be overillustrating he could be overillustrating we could be overillustrating you could be overillustrating they could be overillustrating
Perfect	V-ing perfect
I could have overillustrated you could have overillustrated he could have overillustrated we could have overillustrated you could have overillustrated they could have overillustrated	I could have been overillustrating you could have been overillustrating he could have been overillustrating we could have been overillustrating you could have been overillustrating they could have been overillustrating

Negation

Simple form	V-ing form
I couldn't overillustrate you couldn't overillustrate he couldn't overillustrate we couldn't overillustrate you couldn't overillustrate they couldn't overillustrate	I couldn't be overillustrating you couldn't be overillustrating he couldn't be overillustrating we couldn't be overillustrating you couldn't be overillustrating they couldn't be overillustrating
Perfect	V-ing perfect
I couldn't have overillustrated you couldn't have overillustrated he couldn't have overillustrated we couldn't have overillustrated you couldn't have overillustrated they couldn't have overillustrated	I couldn't have been overillustrating you couldn't have been overillustrating he couldn't have been overillustrating we couldn't have been overillustrating you couldn't have been overillustrating they couldn't have been overillustrating

Interrogative form

Simple form	V-ing form
could I overillustrate? could you overillustrate? could he overillustrate? could we overillustrate? could you overillustrate? could they overillustrate?	could I be overillustrating? could you be overillustrating? could he be overillustrating? could we be overillustrating? could you be overillustrating? could they be overillustrating?
Perfect	V-ing perfect
could I have overillustrated? could you have overillustrated? could he have overillustrated? could we have overillustrated? could you have overillustrated? could they have overillustrated?	could I have been overillustrating? could you have been overillustrating? could he have been overillustrating? could we have been overillustrating? could you have been overillustrating? could they have been overillustrating?

Interro-negative form

Simple form	V-ing form
couldn't I overillustrate? couldn't you overillustrate? couldn't he overillustrate? couldn't we overillustrate? couldn't you overillustrate? couldn't they overillustrate?	couldn't I be overillustrating? couldn't you be overillustrating? couldn't he be overillustrating? couldn't we be overillustrating? couldn't you be overillustrating? couldn't they be overillustrating?
Perfect	V-ing perfect
couldn't I have overillustrated? couldn't you have overillustrated? couldn't he have overillustrated? couldn't we have overillustrated? couldn't you have overillustrated? couldn't they have overillustrated?	couldn't I have been overillustrating? couldn't you have been overillustrating? couldn't he have been overillustrating? couldn't we have been overillustrating? couldn't you have been overillustrating? couldn't they have been overillustrating?