could grease
Verbo regular: grease - greased- greased

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could grease
you could grease
he could grease
we could grease
you could grease
they could grease 	I could be greasing
you could be greasing
he could be greasing
we could be greasing
you could be greasing
they could be greasing	I could have greased
you could have greased
he could have greased
we could have greased
you could have greased
they could have greased	I could have been greasing
you could have been greasing
he could have been greasing
we could have been greasing
you could have been greasing
they could have been greasing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not grease
you could not grease
he could not grease
we could not grease
you could not grease
they could not grease 	I could not be greasing
you could not be greasing
he could not be greasing
we could not be greasing
you could not be greasing
they could not be greasing	I could not have greased
you could not have greased
he could not have greased
we could not have greased
you could not have greased
they could not have greased	I could not have been greasing
you could not have been greasing
he could not have been greasing
we could not have been greasing
you could not have been greasing
they could not have been greasing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I grease?
could you grease?
could he grease?
could we grease?
could you grease?
could they grease? 	could I be greasing?
could you be greasing?
could he be greasing?
could we be greasing?
could you be greasing?
could they be greasing? 	could I have greased?
could you have greased?
could he have greased?
could we have greased?
could you have greased?
could they have greased? 	could I have been greasing?
could you have been greasing?
could he have been greasing?
could we have been greasing?
could you have been greasing?
could they have been greasing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not grease?
could you not grease?
could he not grease?
could we not grease?
could you not grease?
could they not grease? 	could I not be greasing?
could you not be greasing?
could he not be greasing?
could we not be greasing?
could you not be greasing?
could they not be greasing? 	could I not have greased?
could you not have greased?
could he not have greased?
could we not have greased?
could you not have greased?
could they not have greased? 	could I not have been greasing?
could you not have been greasing?
could he not have been greasing?
could we not have been greasing?
could you not have been greasing?
could they not have been greasing?