I can snatch you can snatch she can snatch we can snatch you can snatch they can snatch
V-ing form
I can be snatching you can be snatching she can be snatching we can be snatching you can be snatching they can be snatching
Perfect
I can have snatched you can have snatched she can have snatched we can have snatched you can have snatched they can have snatched
V-ing perfect
I can have been snatching you can have been snatching she can have been snatching we can have been snatching you can have been snatching they can have been snatching
Negation
Simple form
I can't snatch you can't snatch she can't snatch we can't snatch you can't snatch they can't snatch
V-ing form
I can't be snatching you can't be snatching she can't be snatching we can't be snatching you can't be snatching they can't be snatching
Perfect
I can't have snatched you can't have snatched she can't have snatched we can't have snatched you can't have snatched they can't have snatched
V-ing perfect
I can't have been snatching you can't have been snatching she can't have been snatching we can't have been snatching you can't have been snatching they can't have been snatching
Interrogative form
Simple form
can I snatch? can you snatch? can she snatch? can we snatch? can you snatch? can they snatch?
V-ing form
can I be snatching? can you be snatching? can she be snatching? can we be snatching? can you be snatching? can they be snatching?
Perfect
can I have snatched? can you have snatched? can she have snatched? can we have snatched? can you have snatched? can they have snatched?
V-ing perfect
can I have been snatching? can you have been snatching? can she have been snatching? can we have been snatching? can you have been snatching? can they have been snatching?
Interro-negative form
Simple form
can't I snatch? can't you snatch? can't she snatch? can't we snatch? can't you snatch? can't they snatch?
V-ing form
can't I be snatching? can't you be snatching? can't she be snatching? can't we be snatching? can't you be snatching? can't they be snatching?
Perfect
can't I have snatched? can't you have snatched? can't she have snatched? can't we have snatched? can't you have snatched? can't they have snatched?
V-ing perfect
can't I have been snatching? can't you have been snatching? can't she have been snatching? can't we have been snatching? can't you have been snatching? can't they have been snatching?