I can spot you can spot she can spot we can spot you can spot they can spot
V-ing form
I can be spotting you can be spotting she can be spotting we can be spotting you can be spotting they can be spotting
Perfect
I can have spotted you can have spotted she can have spotted we can have spotted you can have spotted they can have spotted
V-ing perfect
I can have been spotting you can have been spotting she can have been spotting we can have been spotting you can have been spotting they can have been spotting
Negation
Simple form
I can't spot you can't spot she can't spot we can't spot you can't spot they can't spot
V-ing form
I can't be spotting you can't be spotting she can't be spotting we can't be spotting you can't be spotting they can't be spotting
Perfect
I can't have spotted you can't have spotted she can't have spotted we can't have spotted you can't have spotted they can't have spotted
V-ing perfect
I can't have been spotting you can't have been spotting she can't have been spotting we can't have been spotting you can't have been spotting they can't have been spotting
Interrogative form
Simple form
can I spot? can you spot? can she spot? can we spot? can you spot? can they spot?
V-ing form
can I be spotting? can you be spotting? can she be spotting? can we be spotting? can you be spotting? can they be spotting?
Perfect
can I have spotted? can you have spotted? can she have spotted? can we have spotted? can you have spotted? can they have spotted?
V-ing perfect
can I have been spotting? can you have been spotting? can she have been spotting? can we have been spotting? can you have been spotting? can they have been spotting?
Interro-negative form
Simple form
can't I spot? can't you spot? can't she spot? can't we spot? can't you spot? can't they spot?
V-ing form
can't I be spotting? can't you be spotting? can't she be spotting? can't we be spotting? can't you be spotting? can't they be spotting?
Perfect
can't I have spotted? can't you have spotted? can't she have spotted? can't we have spotted? can't you have spotted? can't they have spotted?
V-ing perfect
can't I have been spotting? can't you have been spotting? can't she have been spotting? can't we have been spotting? can't you have been spotting? can't they have been spotting?