could meliorate
Verbe régulier : meliorate - meliorated- meliorated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could meliorate
you could meliorate
he could meliorate
we could meliorate
you could meliorate
they could meliorate 	I could be meliorating
you could be meliorating
he could be meliorating
we could be meliorating
you could be meliorating
they could be meliorating	I could have meliorated
you could have meliorated
he could have meliorated
we could have meliorated
you could have meliorated
they could have meliorated	I could have been meliorating
you could have been meliorating
he could have been meliorating
we could have been meliorating
you could have been meliorating
they could have been meliorating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't meliorate
you couldn't meliorate
he couldn't meliorate
we couldn't meliorate
you couldn't meliorate
they couldn't meliorate 	I couldn't be meliorating
you couldn't be meliorating
he couldn't be meliorating
we couldn't be meliorating
you couldn't be meliorating
they couldn't be meliorating	I couldn't have meliorated
you couldn't have meliorated
he couldn't have meliorated
we couldn't have meliorated
you couldn't have meliorated
they couldn't have meliorated	I couldn't have been meliorating
you couldn't have been meliorating
he couldn't have been meliorating
we couldn't have been meliorating
you couldn't have been meliorating
they couldn't have been meliorating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I meliorate?
could you meliorate?
could he meliorate?
could we meliorate?
could you meliorate?
could they meliorate? 	could I be meliorating?
could you be meliorating?
could he be meliorating?
could we be meliorating?
could you be meliorating?
could they be meliorating? 	could I have meliorated?
could you have meliorated?
could he have meliorated?
could we have meliorated?
could you have meliorated?
could they have meliorated? 	could I have been meliorating?
could you have been meliorating?
could he have been meliorating?
could we have been meliorating?
could you have been meliorating?
could they have been meliorating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I meliorate?
couldn't you meliorate?
couldn't he meliorate?
couldn't we meliorate?
couldn't you meliorate?
couldn't they meliorate? 	couldn't I be meliorating?
couldn't you be meliorating?
couldn't he be meliorating?
couldn't we be meliorating?
couldn't you be meliorating?
couldn't they be meliorating? 	couldn't I have meliorated?
couldn't you have meliorated?
couldn't he have meliorated?
couldn't we have meliorated?
couldn't you have meliorated?
couldn't they have meliorated? 	couldn't I have been meliorating?
couldn't you have been meliorating?
couldn't he have been meliorating?
couldn't we have been meliorating?
couldn't you have been meliorating?
couldn't they have been meliorating?