I can submerge you can submerge she can submerge we can submerge you can submerge they can submerge
V-ing form
I can be submerging you can be submerging she can be submerging we can be submerging you can be submerging they can be submerging
Perfect
I can have submerged you can have submerged she 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 she 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 she 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 she 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 she 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 she 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 she submerge? can we submerge? can you submerge? can they submerge?
V-ing form
can I be submerging? can you be submerging? can she be submerging? can we be submerging? can you be submerging? can they be submerging?
Perfect
can I have submerged? can you have submerged? can she 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 she 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 she 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 she 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 she 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 she have been submerging? can't we have been submerging? can't you have been submerging? can't they have been submerging?