could vat
Verbo regular: vat - vatted- vatted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could vat
you could vat
she could vat
we could vat
you could vat
they could vat 	I could be vatting
you could be vatting
she could be vatting
we could be vatting
you could be vatting
they could be vatting	I could have vatted
you could have vatted
she could have vatted
we could have vatted
you could have vatted
they could have vatted	I could have been vatting
you could have been vatting
she could have been vatting
we could have been vatting
you could have been vatting
they could have been vatting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not vat
you could not vat
she could not vat
we could not vat
you could not vat
they could not vat 	I could not be vatting
you could not be vatting
she could not be vatting
we could not be vatting
you could not be vatting
they could not be vatting	I could not have vatted
you could not have vatted
she could not have vatted
we could not have vatted
you could not have vatted
they could not have vatted	I could not have been vatting
you could not have been vatting
she could not have been vatting
we could not have been vatting
you could not have been vatting
they could not have been vatting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I vat?
could you vat?
could she vat?
could we vat?
could you vat?
could they vat? 	could I be vatting?
could you be vatting?
could she be vatting?
could we be vatting?
could you be vatting?
could they be vatting? 	could I have vatted?
could you have vatted?
could she have vatted?
could we have vatted?
could you have vatted?
could they have vatted? 	could I have been vatting?
could you have been vatting?
could she have been vatting?
could we have been vatting?
could you have been vatting?
could they have been vatting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not vat?
could you not vat?
could she not vat?
could we not vat?
could you not vat?
could they not vat? 	could I not be vatting?
could you not be vatting?
could she not be vatting?
could we not be vatting?
could you not be vatting?
could they not be vatting? 	could I not have vatted?
could you not have vatted?
could she not have vatted?
could we not have vatted?
could you not have vatted?
could they not have vatted? 	could I not have been vatting?
could you not have been vatting?
could she not have been vatting?
could we not have been vatting?
could you not have been vatting?
could they not have been vatting?