could shirr
Verbe régulier : shirr - shirred- shirred

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could shirr
you could shirr
he could shirr
we could shirr
you could shirr
they could shirr 	I could be shirring
you could be shirring
he could be shirring
we could be shirring
you could be shirring
they could be shirring	I could have shirred
you could have shirred
he could have shirred
we could have shirred
you could have shirred
they could have shirred	I could have been shirring
you could have been shirring
he could have been shirring
we could have been shirring
you could have been shirring
they could have been shirring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't shirr
you couldn't shirr
he couldn't shirr
we couldn't shirr
you couldn't shirr
they couldn't shirr 	I couldn't be shirring
you couldn't be shirring
he couldn't be shirring
we couldn't be shirring
you couldn't be shirring
they couldn't be shirring	I couldn't have shirred
you couldn't have shirred
he couldn't have shirred
we couldn't have shirred
you couldn't have shirred
they couldn't have shirred	I couldn't have been shirring
you couldn't have been shirring
he couldn't have been shirring
we couldn't have been shirring
you couldn't have been shirring
they couldn't have been shirring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I shirr?
could you shirr?
could he shirr?
could we shirr?
could you shirr?
could they shirr? 	could I be shirring?
could you be shirring?
could he be shirring?
could we be shirring?
could you be shirring?
could they be shirring? 	could I have shirred?
could you have shirred?
could he have shirred?
could we have shirred?
could you have shirred?
could they have shirred? 	could I have been shirring?
could you have been shirring?
could he have been shirring?
could we have been shirring?
could you have been shirring?
could they have been shirring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I shirr?
couldn't you shirr?
couldn't he shirr?
couldn't we shirr?
couldn't you shirr?
couldn't they shirr? 	couldn't I be shirring?
couldn't you be shirring?
couldn't he be shirring?
couldn't we be shirring?
couldn't you be shirring?
couldn't they be shirring? 	couldn't I have shirred?
couldn't you have shirred?
couldn't he have shirred?
couldn't we have shirred?
couldn't you have shirred?
couldn't they have shirred? 	couldn't I have been shirring?
couldn't you have been shirring?
couldn't he have been shirring?
couldn't we have been shirring?
couldn't you have been shirring?
couldn't they have been shirring?