I can article you can article she can article we can article you can article they can article
V-ing form
I can be articling you can be articling she can be articling we can be articling you can be articling they can be articling
Perfect
I can have articled you can have articled she can have articled we can have articled you can have articled they can have articled
V-ing perfect
I can have been articling you can have been articling she can have been articling we can have been articling you can have been articling they can have been articling
Negation
Simple form
I can't article you can't article she can't article we can't article you can't article they can't article
V-ing form
I can't be articling you can't be articling she can't be articling we can't be articling you can't be articling they can't be articling
Perfect
I can't have articled you can't have articled she can't have articled we can't have articled you can't have articled they can't have articled
V-ing perfect
I can't have been articling you can't have been articling she can't have been articling we can't have been articling you can't have been articling they can't have been articling
Interrogative form
Simple form
can I article? can you article? can she article? can we article? can you article? can they article?
V-ing form
can I be articling? can you be articling? can she be articling? can we be articling? can you be articling? can they be articling?
Perfect
can I have articled? can you have articled? can she have articled? can we have articled? can you have articled? can they have articled?
V-ing perfect
can I have been articling? can you have been articling? can she have been articling? can we have been articling? can you have been articling? can they have been articling?
Interro-negative form
Simple form
can't I article? can't you article? can't she article? can't we article? can't you article? can't they article?
V-ing form
can't I be articling? can't you be articling? can't she be articling? can't we be articling? can't you be articling? can't they be articling?
Perfect
can't I have articled? can't you have articled? can't she have articled? can't we have articled? can't you have articled? can't they have articled?
V-ing perfect
can't I have been articling? can't you have been articling? can't she have been articling? can't we have been articling? can't you have been articling? can't they have been articling?