could overwinter
Verbe régulier : overwinter - overwintered- overwintered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could overwinter
you could overwinter
she could overwinter
we could overwinter
you could overwinter
they could overwinter 	I could be overwintering
you could be overwintering
she could be overwintering
we could be overwintering
you could be overwintering
they could be overwintering	I could have overwintered
you could have overwintered
she could have overwintered
we could have overwintered
you could have overwintered
they could have overwintered	I could have been overwintering
you could have been overwintering
she could have been overwintering
we could have been overwintering
you could have been overwintering
they could have been overwintering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't overwinter
you couldn't overwinter
she couldn't overwinter
we couldn't overwinter
you couldn't overwinter
they couldn't overwinter 	I couldn't be overwintering
you couldn't be overwintering
she couldn't be overwintering
we couldn't be overwintering
you couldn't be overwintering
they couldn't be overwintering	I couldn't have overwintered
you couldn't have overwintered
she couldn't have overwintered
we couldn't have overwintered
you couldn't have overwintered
they couldn't have overwintered	I couldn't have been overwintering
you couldn't have been overwintering
she couldn't have been overwintering
we couldn't have been overwintering
you couldn't have been overwintering
they couldn't have been overwintering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I overwinter?
could you overwinter?
could she overwinter?
could we overwinter?
could you overwinter?
could they overwinter? 	could I be overwintering?
could you be overwintering?
could she be overwintering?
could we be overwintering?
could you be overwintering?
could they be overwintering? 	could I have overwintered?
could you have overwintered?
could she have overwintered?
could we have overwintered?
could you have overwintered?
could they have overwintered? 	could I have been overwintering?
could you have been overwintering?
could she have been overwintering?
could we have been overwintering?
could you have been overwintering?
could they have been overwintering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I overwinter?
couldn't you overwinter?
couldn't she overwinter?
couldn't we overwinter?
couldn't you overwinter?
couldn't they overwinter? 	couldn't I be overwintering?
couldn't you be overwintering?
couldn't she be overwintering?
couldn't we be overwintering?
couldn't you be overwintering?
couldn't they be overwintering? 	couldn't I have overwintered?
couldn't you have overwintered?
couldn't she have overwintered?
couldn't we have overwintered?
couldn't you have overwintered?
couldn't they have overwintered? 	couldn't I have been overwintering?
couldn't you have been overwintering?
couldn't she have been overwintering?
couldn't we have been overwintering?
couldn't you have been overwintering?
couldn't they have been overwintering?