I can submerge you can submerge he can submerge we can submerge you can submerge they can submerge
V-ing form
I can be submerging you can be submerging he can be submerging we can be submerging you can be submerging they can be submerging
Perfect
I can have submerged you can have submerged he can have submerged we can have submerged you can have submerged they can have submerged
V-ing perfect
I can have been submerging you can have been submerging he can have been submerging we can have been submerging you can have been submerging they can have been submerging
Negation
Simple form
I can't submerge you can't submerge he can't submerge we can't submerge you can't submerge they can't submerge
V-ing form
I can't be submerging you can't be submerging he can't be submerging we can't be submerging you can't be submerging they can't be submerging
Perfect
I can't have submerged you can't have submerged he can't have submerged we can't have submerged you can't have submerged they can't have submerged
V-ing perfect
I can't have been submerging you can't have been submerging he can't have been submerging we can't have been submerging you can't have been submerging they can't have been submerging
Interrogative form
Simple form
can I submerge? can you submerge? can he submerge? can we submerge? can you submerge? can they submerge?
V-ing form
can I be submerging? can you be submerging? can he be submerging? can we be submerging? can you be submerging? can they be submerging?
Perfect
can I have submerged? can you have submerged? can he have submerged? can we have submerged? can you have submerged? can they have submerged?
V-ing perfect
can I have been submerging? can you have been submerging? can he have been submerging? can we have been submerging? can you have been submerging? can they have been submerging?
Interro-negative form
Simple form
can't I submerge? can't you submerge? can't he submerge? can't we submerge? can't you submerge? can't they submerge?
V-ing form
can't I be submerging? can't you be submerging? can't he be submerging? can't we be submerging? can't you be submerging? can't they be submerging?
Perfect
can't I have submerged? can't you have submerged? can't he have submerged? can't we have submerged? can't you have submerged? can't they have submerged?
V-ing perfect
can't I have been submerging? can't you have been submerging? can't he have been submerging? can't we have been submerging? can't you have been submerging? can't they have been submerging?