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
she could shirttail
we could shirttail
you could shirttail
they could shirttail 	I could be shirttailing
you could be shirttailing
she could be shirttailing
we could be shirttailing
you could be shirttailing
they could be shirttailing	I could have shirttailed
you could have shirttailed
she 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
she 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
she 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
she 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
she 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
she 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 she shirttail?
could we shirttail?
could you shirttail?
could they shirttail? 	could I be shirttailing?
could you be shirttailing?
could she be shirttailing?
could we be shirttailing?
could you be shirttailing?
could they be shirttailing? 	could I have shirttailed?
could you have shirttailed?
could she 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 she 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 she 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 she 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 she 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 she have been shirttailing?
couldn't we have been shirttailing?
couldn't you have been shirttailing?
couldn't they have been shirttailing?