I can spot you can spot he can spot we can spot you can spot they can spot
V-ing form
I can be spotting you can be spotting he can be spotting we can be spotting you can be spotting they can be spotting
Perfect
I can have spotted you can have spotted he 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 he 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 he 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 he 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 he 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 he 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 he spot? can we spot? can you spot? can they spot?
V-ing form
can I be spotting? can you be spotting? can he be spotting? can we be spotting? can you be spotting? can they be spotting?
Perfect
can I have spotted? can you have spotted? can he 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 he 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 he 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 he 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 he 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 he have been spotting? can't we have been spotting? can't you have been spotting? can't they have been spotting?