English verb conjugation
COULD LUCUBRATE

Regular verb: lucubrate - lucubrated - lucubrated

Affirmation

Simple form	V-ing form
I could lucubrate you could lucubrate she could lucubrate we could lucubrate you could lucubrate they could lucubrate	I could be lucubrating you could be lucubrating she could be lucubrating we could be lucubrating you could be lucubrating they could be lucubrating
Perfect	V-ing perfect
I could have lucubrated you could have lucubrated she could have lucubrated we could have lucubrated you could have lucubrated they could have lucubrated	I could have been lucubrating you could have been lucubrating she could have been lucubrating we could have been lucubrating you could have been lucubrating they could have been lucubrating

Negation

Simple form	V-ing form
I could not lucubrate you could not lucubrate she could not lucubrate we could not lucubrate you could not lucubrate they could not lucubrate	I could not be lucubrating you could not be lucubrating she could not be lucubrating we could not be lucubrating you could not be lucubrating they could not be lucubrating
Perfect	V-ing perfect
I could not have lucubrated you could not have lucubrated she could not have lucubrated we could not have lucubrated you could not have lucubrated they could not have lucubrated	I could not have been lucubrating you could not have been lucubrating she could not have been lucubrating we could not have been lucubrating you could not have been lucubrating they could not have been lucubrating

Interrogative form

Simple form	V-ing form
could I lucubrate? could you lucubrate? could she lucubrate? could we lucubrate? could you lucubrate? could they lucubrate?	could I be lucubrating? could you be lucubrating? could she be lucubrating? could we be lucubrating? could you be lucubrating? could they be lucubrating?
Perfect	V-ing perfect
could I have lucubrated? could you have lucubrated? could she have lucubrated? could we have lucubrated? could you have lucubrated? could they have lucubrated?	could I have been lucubrating? could you have been lucubrating? could she have been lucubrating? could we have been lucubrating? could you have been lucubrating? could they have been lucubrating?

Interro-negative form

Simple form	V-ing form
could I not lucubrate? could you not lucubrate? could she not lucubrate? could we not lucubrate? could you not lucubrate? could they not lucubrate?	could I not be lucubrating? could you not be lucubrating? could she not be lucubrating? could we not be lucubrating? could you not be lucubrating? could they not be lucubrating?
Perfect	V-ing perfect
could I not have lucubrated? could you not have lucubrated? could she not have lucubrated? could we not have lucubrated? could you not have lucubrated? could they not have lucubrated?	could I not have been lucubrating? could you not have been lucubrating? could she not have been lucubrating? could we not have been lucubrating? could you not have been lucubrating? could they not have been lucubrating?