could spot
Verbo regular: spot - spotted- spotted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could spot
you could spot
he could spot
we could spot
you could spot
they could spot 	I could be spotting
you could be spotting
he could be spotting
we could be spotting
you could be spotting
they could be spotting	I could have spotted
you could have spotted
he could have spotted
we could have spotted
you could have spotted
they could have spotted	I could have been spotting
you could have been spotting
he could have been spotting
we could have been spotting
you could have been spotting
they could have been spotting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not spot
you could not spot
he could not spot
we could not spot
you could not spot
they could not spot 	I could not be spotting
you could not be spotting
he could not be spotting
we could not be spotting
you could not be spotting
they could not be spotting	I could not have spotted
you could not have spotted
he could not have spotted
we could not have spotted
you could not have spotted
they could not have spotted	I could not have been spotting
you could not have been spotting
he could not have been spotting
we could not have been spotting
you could not have been spotting
they could not have been spotting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I spot?
could you spot?
could he spot?
could we spot?
could you spot?
could they spot? 	could I be spotting?
could you be spotting?
could he be spotting?
could we be spotting?
could you be spotting?
could they be spotting? 	could I have spotted?
could you have spotted?
could he have spotted?
could we have spotted?
could you have spotted?
could they have spotted? 	could I have been spotting?
could you have been spotting?
could he have been spotting?
could we have been spotting?
could you have been spotting?
could they have been spotting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not spot?
could you not spot?
could he not spot?
could we not spot?
could you not spot?
could they not spot? 	could I not be spotting?
could you not be spotting?
could he not be spotting?
could we not be spotting?
could you not be spotting?
could they not be spotting? 	could I not have spotted?
could you not have spotted?
could he not have spotted?
could we not have spotted?
could you not have spotted?
could they not have spotted? 	could I not have been spotting?
could you not have been spotting?
could he not have been spotting?
could we not have been spotting?
could you not have been spotting?
could they not have been spotting?