could shallow
Verbe régulier : shallow - shallowed- shallowed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could shallow
you could shallow
she could shallow
we could shallow
you could shallow
they could shallow 	I could be shallowing
you could be shallowing
she could be shallowing
we could be shallowing
you could be shallowing
they could be shallowing	I could have shallowed
you could have shallowed
she could have shallowed
we could have shallowed
you could have shallowed
they could have shallowed	I could have been shallowing
you could have been shallowing
she could have been shallowing
we could have been shallowing
you could have been shallowing
they could have been shallowing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't shallow
you couldn't shallow
she couldn't shallow
we couldn't shallow
you couldn't shallow
they couldn't shallow 	I couldn't be shallowing
you couldn't be shallowing
she couldn't be shallowing
we couldn't be shallowing
you couldn't be shallowing
they couldn't be shallowing	I couldn't have shallowed
you couldn't have shallowed
she couldn't have shallowed
we couldn't have shallowed
you couldn't have shallowed
they couldn't have shallowed	I couldn't have been shallowing
you couldn't have been shallowing
she couldn't have been shallowing
we couldn't have been shallowing
you couldn't have been shallowing
they couldn't have been shallowing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I shallow?
could you shallow?
could she shallow?
could we shallow?
could you shallow?
could they shallow? 	could I be shallowing?
could you be shallowing?
could she be shallowing?
could we be shallowing?
could you be shallowing?
could they be shallowing? 	could I have shallowed?
could you have shallowed?
could she have shallowed?
could we have shallowed?
could you have shallowed?
could they have shallowed? 	could I have been shallowing?
could you have been shallowing?
could she have been shallowing?
could we have been shallowing?
could you have been shallowing?
could they have been shallowing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I shallow?
couldn't you shallow?
couldn't she shallow?
couldn't we shallow?
couldn't you shallow?
couldn't they shallow? 	couldn't I be shallowing?
couldn't you be shallowing?
couldn't she be shallowing?
couldn't we be shallowing?
couldn't you be shallowing?
couldn't they be shallowing? 	couldn't I have shallowed?
couldn't you have shallowed?
couldn't she have shallowed?
couldn't we have shallowed?
couldn't you have shallowed?
couldn't they have shallowed? 	couldn't I have been shallowing?
couldn't you have been shallowing?
couldn't she have been shallowing?
couldn't we have been shallowing?
couldn't you have been shallowing?
couldn't they have been shallowing?