could tat
Verbe régulier : tat - tatted- tatted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could tat
you could tat
she could tat
we could tat
you could tat
they could tat 	I could be tatting
you could be tatting
she could be tatting
we could be tatting
you could be tatting
they could be tatting	I could have tatted
you could have tatted
she could have tatted
we could have tatted
you could have tatted
they could have tatted	I could have been tatting
you could have been tatting
she could have been tatting
we could have been tatting
you could have been tatting
they could have been tatting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not tat
you could not tat
she could not tat
we could not tat
you could not tat
they could not tat 	I could not be tatting
you could not be tatting
she could not be tatting
we could not be tatting
you could not be tatting
they could not be tatting	I could not have tatted
you could not have tatted
she could not have tatted
we could not have tatted
you could not have tatted
they could not have tatted	I could not have been tatting
you could not have been tatting
she could not have been tatting
we could not have been tatting
you could not have been tatting
they could not have been tatting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I tat?
could you tat?
could she tat?
could we tat?
could you tat?
could they tat? 	could I be tatting?
could you be tatting?
could she be tatting?
could we be tatting?
could you be tatting?
could they be tatting? 	could I have tatted?
could you have tatted?
could she have tatted?
could we have tatted?
could you have tatted?
could they have tatted? 	could I have been tatting?
could you have been tatting?
could she have been tatting?
could we have been tatting?
could you have been tatting?
could they have been tatting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not tat?
could you not tat?
could she not tat?
could we not tat?
could you not tat?
could they not tat? 	could I not be tatting?
could you not be tatting?
could she not be tatting?
could we not be tatting?
could you not be tatting?
could they not be tatting? 	could I not have tatted?
could you not have tatted?
could she not have tatted?
could we not have tatted?
could you not have tatted?
could they not have tatted? 	could I not have been tatting?
could you not have been tatting?
could she not have been tatting?
could we not have been tatting?
could you not have been tatting?
could they not have been tatting?