could shirttail
Verbe régulier : shirttail - shirttailed- shirttailed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could shirttail
you could shirttail
he could shirttail
we could shirttail
you could shirttail
they could shirttail 	I could be shirttailing
you could be shirttailing
he could be shirttailing
we could be shirttailing
you could be shirttailing
they could be shirttailing	I could have shirttailed
you could have shirttailed
he could have shirttailed
we could have shirttailed
you could have shirttailed
they could have shirttailed	I could have been shirttailing
you could have been shirttailing
he could have been shirttailing
we could have been shirttailing
you could have been shirttailing
they could have been shirttailing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't shirttail
you couldn't shirttail
he couldn't shirttail
we couldn't shirttail
you couldn't shirttail
they couldn't shirttail 	I couldn't be shirttailing
you couldn't be shirttailing
he couldn't be shirttailing
we couldn't be shirttailing
you couldn't be shirttailing
they couldn't be shirttailing	I couldn't have shirttailed
you couldn't have shirttailed
he couldn't have shirttailed
we couldn't have shirttailed
you couldn't have shirttailed
they couldn't have shirttailed	I couldn't have been shirttailing
you couldn't have been shirttailing
he couldn't have been shirttailing
we couldn't have been shirttailing
you couldn't have been shirttailing
they couldn't have been shirttailing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I shirttail?
could you shirttail?
could he shirttail?
could we shirttail?
could you shirttail?
could they shirttail? 	could I be shirttailing?
could you be shirttailing?
could he be shirttailing?
could we be shirttailing?
could you be shirttailing?
could they be shirttailing? 	could I have shirttailed?
could you have shirttailed?
could he have shirttailed?
could we have shirttailed?
could you have shirttailed?
could they have shirttailed? 	could I have been shirttailing?
could you have been shirttailing?
could he have been shirttailing?
could we have been shirttailing?
could you have been shirttailing?
could they have been shirttailing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I shirttail?
couldn't you shirttail?
couldn't he shirttail?
couldn't we shirttail?
couldn't you shirttail?
couldn't they shirttail? 	couldn't I be shirttailing?
couldn't you be shirttailing?
couldn't he be shirttailing?
couldn't we be shirttailing?
couldn't you be shirttailing?
couldn't they be shirttailing? 	couldn't I have shirttailed?
couldn't you have shirttailed?
couldn't he have shirttailed?
couldn't we have shirttailed?
couldn't you have shirttailed?
couldn't they have shirttailed? 	couldn't I have been shirttailing?
couldn't you have been shirttailing?
couldn't he have been shirttailing?
couldn't we have been shirttailing?
couldn't you have been shirttailing?
couldn't they have been shirttailing?