could billow
Verbe régulier : billow - billowed- billowed
Traduction française : onduler - se gonfler 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could billow
you could billow
she could billow
we could billow
you could billow
they could billow 	I could be billowing
you could be billowing
she could be billowing
we could be billowing
you could be billowing
they could be billowing	I could have billowed
you could have billowed
she could have billowed
we could have billowed
you could have billowed
they could have billowed	I could have been billowing
you could have been billowing
she could have been billowing
we could have been billowing
you could have been billowing
they could have been billowing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't billow
you couldn't billow
she couldn't billow
we couldn't billow
you couldn't billow
they couldn't billow 	I couldn't be billowing
you couldn't be billowing
she couldn't be billowing
we couldn't be billowing
you couldn't be billowing
they couldn't be billowing	I couldn't have billowed
you couldn't have billowed
she couldn't have billowed
we couldn't have billowed
you couldn't have billowed
they couldn't have billowed	I couldn't have been billowing
you couldn't have been billowing
she couldn't have been billowing
we couldn't have been billowing
you couldn't have been billowing
they couldn't have been billowing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I billow?
could you billow?
could she billow?
could we billow?
could you billow?
could they billow? 	could I be billowing?
could you be billowing?
could she be billowing?
could we be billowing?
could you be billowing?
could they be billowing? 	could I have billowed?
could you have billowed?
could she have billowed?
could we have billowed?
could you have billowed?
could they have billowed? 	could I have been billowing?
could you have been billowing?
could she have been billowing?
could we have been billowing?
could you have been billowing?
could they have been billowing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I billow?
couldn't you billow?
couldn't she billow?
couldn't we billow?
couldn't you billow?
couldn't they billow? 	couldn't I be billowing?
couldn't you be billowing?
couldn't she be billowing?
couldn't we be billowing?
couldn't you be billowing?
couldn't they be billowing? 	couldn't I have billowed?
couldn't you have billowed?
couldn't she have billowed?
couldn't we have billowed?
couldn't you have billowed?
couldn't they have billowed? 	couldn't I have been billowing?
couldn't you have been billowing?
couldn't she have been billowing?
couldn't we have been billowing?
couldn't you have been billowing?
couldn't they have been billowing?