could antiquate
Verbo regular: antiquate - antiquated- antiquated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could antiquate
you could antiquate
he could antiquate
we could antiquate
you could antiquate
they could antiquate 	I could be antiquating
you could be antiquating
he could be antiquating
we could be antiquating
you could be antiquating
they could be antiquating	I could have antiquated
you could have antiquated
he could have antiquated
we could have antiquated
you could have antiquated
they could have antiquated	I could have been antiquating
you could have been antiquating
he could have been antiquating
we could have been antiquating
you could have been antiquating
they could have been antiquating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not antiquate
you could not antiquate
he could not antiquate
we could not antiquate
you could not antiquate
they could not antiquate 	I could not be antiquating
you could not be antiquating
he could not be antiquating
we could not be antiquating
you could not be antiquating
they could not be antiquating	I could not have antiquated
you could not have antiquated
he could not have antiquated
we could not have antiquated
you could not have antiquated
they could not have antiquated	I could not have been antiquating
you could not have been antiquating
he could not have been antiquating
we could not have been antiquating
you could not have been antiquating
they could not have been antiquating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I antiquate?
could you antiquate?
could he antiquate?
could we antiquate?
could you antiquate?
could they antiquate? 	could I be antiquating?
could you be antiquating?
could he be antiquating?
could we be antiquating?
could you be antiquating?
could they be antiquating? 	could I have antiquated?
could you have antiquated?
could he have antiquated?
could we have antiquated?
could you have antiquated?
could they have antiquated? 	could I have been antiquating?
could you have been antiquating?
could he have been antiquating?
could we have been antiquating?
could you have been antiquating?
could they have been antiquating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not antiquate?
could you not antiquate?
could he not antiquate?
could we not antiquate?
could you not antiquate?
could they not antiquate? 	could I not be antiquating?
could you not be antiquating?
could he not be antiquating?
could we not be antiquating?
could you not be antiquating?
could they not be antiquating? 	could I not have antiquated?
could you not have antiquated?
could he not have antiquated?
could we not have antiquated?
could you not have antiquated?
could they not have antiquated? 	could I not have been antiquating?
could you not have been antiquating?
could he not have been antiquating?
could we not have been antiquating?
could you not have been antiquating?
could they not have been antiquating?