could lucubrate
Verbe régulier : lucubrate - lucubrated- lucubrated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't lucubrate
you couldn't lucubrate
she couldn't lucubrate
we couldn't lucubrate
you couldn't lucubrate
they couldn't lucubrate 	I couldn't be lucubrating
you couldn't be lucubrating
she couldn't be lucubrating
we couldn't be lucubrating
you couldn't be lucubrating
they couldn't be lucubrating	I couldn't have lucubrated
you couldn't have lucubrated
she couldn't have lucubrated
we couldn't have lucubrated
you couldn't have lucubrated
they couldn't have lucubrated	I couldn't have been lucubrating
you couldn't have been lucubrating
she couldn't have been lucubrating
we couldn't have been lucubrating
you couldn't have been lucubrating
they couldn't have been lucubrating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I lucubrate?
couldn't you lucubrate?
couldn't she lucubrate?
couldn't we lucubrate?
couldn't you lucubrate?
couldn't they lucubrate? 	couldn't I be lucubrating?
couldn't you be lucubrating?
couldn't she be lucubrating?
couldn't we be lucubrating?
couldn't you be lucubrating?
couldn't they be lucubrating? 	couldn't I have lucubrated?
couldn't you have lucubrated?
couldn't she have lucubrated?
couldn't we have lucubrated?
couldn't you have lucubrated?
couldn't they have lucubrated? 	couldn't I have been lucubrating?
couldn't you have been lucubrating?
couldn't she have been lucubrating?
couldn't we have been lucubrating?
couldn't you have been lucubrating?
couldn't they have been lucubrating?