I can ta you can ta she can ta we can ta you can ta they can ta
V-ing form
I can be taing you can be taing she can be taing we can be taing you can be taing they can be taing
Perfect
I can have taed you can have taed she can have taed we can have taed you can have taed they can have taed
V-ing perfect
I can have been taing you can have been taing she can have been taing we can have been taing you can have been taing they can have been taing
Negation
Simple form
I cannot ta you cannot ta she cannot ta we cannot ta you cannot ta they cannot ta
V-ing form
I cannot be taing you cannot be taing she cannot be taing we cannot be taing you cannot be taing they cannot be taing
Perfect
I cannot have taed you cannot have taed she cannot have taed we cannot have taed you cannot have taed they cannot have taed
V-ing perfect
I cannot have been taing you cannot have been taing she cannot have been taing we cannot have been taing you cannot have been taing they cannot have been taing
Interrogative form
Simple form
can I ta? can you ta? can she ta? can we ta? can you ta? can they ta?
V-ing form
can I be taing? can you be taing? can she be taing? can we be taing? can you be taing? can they be taing?
Perfect
can I have taed? can you have taed? can she have taed? can we have taed? can you have taed? can they have taed?
V-ing perfect
can I have been taing? can you have been taing? can she have been taing? can we have been taing? can you have been taing? can they have been taing?
Interro-negative form
Simple form
can I not ta? can you not ta? can she not ta? can we not ta? can you not ta? can they not ta?
V-ing form
can I not be taing? can you not be taing? can she not be taing? can we not be taing? can you not be taing? can they not be taing?
Perfect
can I not have taed? can you not have taed? can she not have taed? can we not have taed? can you not have taed? can they not have taed?
V-ing perfect
can I not have been taing? can you not have been taing? can she not have been taing? can we not have been taing? can you not have been taing? can they not have been taing?