I can desert you can desert he can desert we can desert you can desert they can desert
V-ing form
I can be deserting you can be deserting he can be deserting we can be deserting you can be deserting they can be deserting
Perfect
I can have deserted you can have deserted he can have deserted we can have deserted you can have deserted they can have deserted
V-ing perfect
I can have been deserting you can have been deserting he can have been deserting we can have been deserting you can have been deserting they can have been deserting
Negation
Simple form
I can't desert you can't desert he can't desert we can't desert you can't desert they can't desert
V-ing form
I can't be deserting you can't be deserting he can't be deserting we can't be deserting you can't be deserting they can't be deserting
Perfect
I can't have deserted you can't have deserted he can't have deserted we can't have deserted you can't have deserted they can't have deserted
V-ing perfect
I can't have been deserting you can't have been deserting he can't have been deserting we can't have been deserting you can't have been deserting they can't have been deserting
Interrogative form
Simple form
can I desert? can you desert? can he desert? can we desert? can you desert? can they desert?
V-ing form
can I be deserting? can you be deserting? can he be deserting? can we be deserting? can you be deserting? can they be deserting?
Perfect
can I have deserted? can you have deserted? can he have deserted? can we have deserted? can you have deserted? can they have deserted?
V-ing perfect
can I have been deserting? can you have been deserting? can he have been deserting? can we have been deserting? can you have been deserting? can they have been deserting?
Interro-negative form
Simple form
can't I desert? can't you desert? can't he desert? can't we desert? can't you desert? can't they desert?
V-ing form
can't I be deserting? can't you be deserting? can't he be deserting? can't we be deserting? can't you be deserting? can't they be deserting?
Perfect
can't I have deserted? can't you have deserted? can't he have deserted? can't we have deserted? can't you have deserted? can't they have deserted?
V-ing perfect
can't I have been deserting? can't you have been deserting? can't he have been deserting? can't we have been deserting? can't you have been deserting? can't they have been deserting?