I can abort you can abort she can abort we can abort you can abort they can abort
V-ing form
I can be aborting you can be aborting she can be aborting we can be aborting you can be aborting they can be aborting
Perfect
I can have aborted you can have aborted she 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 she can have been aborting we can have been aborting you can have been aborting they can have been aborting
Negation
Simple form
I can't abort you can't abort she can't abort we can't abort you can't abort they can't abort
V-ing form
I can't be aborting you can't be aborting she can't be aborting we can't be aborting you can't be aborting they can't be aborting
Perfect
I can't have aborted you can't have aborted she can't have aborted we can't have aborted you can't have aborted they can't have aborted
V-ing perfect
I can't have been aborting you can't have been aborting she can't have been aborting we can't have been aborting you can't have been aborting they can't have been aborting
Interrogative form
Simple form
can I abort? can you abort? can she abort? can we abort? can you abort? can they abort?
V-ing form
can I be aborting? can you be aborting? can she be aborting? can we be aborting? can you be aborting? can they be aborting?
Perfect
can I have aborted? can you have aborted? can she 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 she have been aborting? can we have been aborting? can you have been aborting? can they have been aborting?
Interro-negative form
Simple form
can't I abort? can't you abort? can't she abort? can't we abort? can't you abort? can't they abort?
V-ing form
can't I be aborting? can't you be aborting? can't she be aborting? can't we be aborting? can't you be aborting? can't they be aborting?
Perfect
can't I have aborted? can't you have aborted? can't she have aborted? can't we have aborted? can't you have aborted? can't they have aborted?
V-ing perfect
can't I have been aborting? can't you have been aborting? can't she have been aborting? can't we have been aborting? can't you have been aborting? can't they have been aborting?