I can abort you can abort he can abort we can abort you can abort they can abort
V-ing form
I can be aborting you can be aborting he can be aborting we can be aborting you can be aborting they can be aborting
Perfect
I can have aborted you can have aborted he can have aborted we can have aborted you can have aborted they can have aborted
V-ing perfect
I can have been aborting you can have been aborting he can have been aborting we can have been aborting you can have been aborting they can have been aborting
Negation
Simple form
I cannot abort you cannot abort he cannot abort we cannot abort you cannot abort they cannot abort
V-ing form
I cannot be aborting you cannot be aborting he cannot be aborting we cannot be aborting you cannot be aborting they cannot be aborting
Perfect
I cannot have aborted you cannot have aborted he cannot have aborted we cannot have aborted you cannot have aborted they cannot have aborted
V-ing perfect
I cannot have been aborting you cannot have been aborting he cannot have been aborting we cannot have been aborting you cannot have been aborting they cannot have been aborting
Interrogative form
Simple form
can I abort? can you abort? can he abort? can we abort? can you abort? can they abort?
V-ing form
can I be aborting? can you be aborting? can he be aborting? can we be aborting? can you be aborting? can they be aborting?
Perfect
can I have aborted? can you have aborted? can he have aborted? can we have aborted? can you have aborted? can they have aborted?
V-ing perfect
can I have been aborting? can you have been aborting? can he have been aborting? can we have been aborting? can you have been aborting? can they have been aborting?
Interro-negative form
Simple form
can I not abort? can you not abort? can he not abort? can we not abort? can you not abort? can they not abort?
V-ing form
can I not be aborting? can you not be aborting? can he not be aborting? can we not be aborting? can you not be aborting? can they not be aborting?
Perfect
can I not have aborted? can you not have aborted? can he not have aborted? can we not have aborted? can you not have aborted? can they not have aborted?
V-ing perfect
can I not have been aborting? can you not have been aborting? can he not have been aborting? can we not have been aborting? can you not have been aborting? can they not have been aborting?