English verb conjugation
COULD SPOT

Regular verb: spot - spotted - spotted

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?