I can submit you can submit she can submit we can submit you can submit they can submit
V-ing form
I can be submitting you can be submitting she can be submitting we can be submitting you can be submitting they can be submitting
Perfect
I can have submitted you can have submitted she can have submitted we can have submitted you can have submitted they can have submitted
V-ing perfect
I can have been submitting you can have been submitting she can have been submitting we can have been submitting you can have been submitting they can have been submitting
Negation
Simple form
I cannot submit you cannot submit she cannot submit we cannot submit you cannot submit they cannot submit
V-ing form
I cannot be submitting you cannot be submitting she cannot be submitting we cannot be submitting you cannot be submitting they cannot be submitting
Perfect
I cannot have submitted you cannot have submitted she cannot have submitted we cannot have submitted you cannot have submitted they cannot have submitted
V-ing perfect
I cannot have been submitting you cannot have been submitting she cannot have been submitting we cannot have been submitting you cannot have been submitting they cannot have been submitting
Interrogative form
Simple form
can I submit? can you submit? can she submit? can we submit? can you submit? can they submit?
V-ing form
can I be submitting? can you be submitting? can she be submitting? can we be submitting? can you be submitting? can they be submitting?
Perfect
can I have submitted? can you have submitted? can she have submitted? can we have submitted? can you have submitted? can they have submitted?
V-ing perfect
can I have been submitting? can you have been submitting? can she have been submitting? can we have been submitting? can you have been submitting? can they have been submitting?
Interro-negative form
Simple form
can I not submit? can you not submit? can she not submit? can we not submit? can you not submit? can they not submit?
V-ing form
can I not be submitting? can you not be submitting? can she not be submitting? can we not be submitting? can you not be submitting? can they not be submitting?
Perfect
can I not have submitted? can you not have submitted? can she not have submitted? can we not have submitted? can you not have submitted? can they not have submitted?
V-ing perfect
can I not have been submitting? can you not have been submitting? can she not have been submitting? can we not have been submitting? can you not have been submitting? can they not have been submitting?