I can import you can import she can import we can import you can import they can import
V-ing form
I can be importing you can be importing she can be importing we can be importing you can be importing they can be importing
Perfect
I can have imported you can have imported she can have imported we can have imported you can have imported they can have imported
V-ing perfect
I can have been importing you can have been importing she can have been importing we can have been importing you can have been importing they can have been importing
Negation
Simple form
I cannot import you cannot import she cannot import we cannot import you cannot import they cannot import
V-ing form
I cannot be importing you cannot be importing she cannot be importing we cannot be importing you cannot be importing they cannot be importing
Perfect
I cannot have imported you cannot have imported she cannot have imported we cannot have imported you cannot have imported they cannot have imported
V-ing perfect
I cannot have been importing you cannot have been importing she cannot have been importing we cannot have been importing you cannot have been importing they cannot have been importing
Interrogative form
Simple form
can I import? can you import? can she import? can we import? can you import? can they import?
V-ing form
can I be importing? can you be importing? can she be importing? can we be importing? can you be importing? can they be importing?
Perfect
can I have imported? can you have imported? can she have imported? can we have imported? can you have imported? can they have imported?
V-ing perfect
can I have been importing? can you have been importing? can she have been importing? can we have been importing? can you have been importing? can they have been importing?
Interro-negative form
Simple form
can I not import? can you not import? can she not import? can we not import? can you not import? can they not import?
V-ing form
can I not be importing? can you not be importing? can she not be importing? can we not be importing? can you not be importing? can they not be importing?
Perfect
can I not have imported? can you not have imported? can she not have imported? can we not have imported? can you not have imported? can they not have imported?
V-ing perfect
can I not have been importing? can you not have been importing? can she not have been importing? can we not have been importing? can you not have been importing? can they not have been importing?