I can attorn you can attorn he can attorn we can attorn you can attorn they can attorn
V-ing form
I can be attorning you can be attorning he can be attorning we can be attorning you can be attorning they can be attorning
Perfect
I can have attorned you can have attorned he can have attorned we can have attorned you can have attorned they can have attorned
V-ing perfect
I can have been attorning you can have been attorning he can have been attorning we can have been attorning you can have been attorning they can have been attorning
Negation
Simple form
I cannot attorn you cannot attorn he cannot attorn we cannot attorn you cannot attorn they cannot attorn
V-ing form
I cannot be attorning you cannot be attorning he cannot be attorning we cannot be attorning you cannot be attorning they cannot be attorning
Perfect
I cannot have attorned you cannot have attorned he cannot have attorned we cannot have attorned you cannot have attorned they cannot have attorned
V-ing perfect
I cannot have been attorning you cannot have been attorning he cannot have been attorning we cannot have been attorning you cannot have been attorning they cannot have been attorning
Interrogative form
Simple form
can I attorn? can you attorn? can he attorn? can we attorn? can you attorn? can they attorn?
V-ing form
can I be attorning? can you be attorning? can he be attorning? can we be attorning? can you be attorning? can they be attorning?
Perfect
can I have attorned? can you have attorned? can he have attorned? can we have attorned? can you have attorned? can they have attorned?
V-ing perfect
can I have been attorning? can you have been attorning? can he have been attorning? can we have been attorning? can you have been attorning? can they have been attorning?
Interro-negative form
Simple form
can I not attorn? can you not attorn? can he not attorn? can we not attorn? can you not attorn? can they not attorn?
V-ing form
can I not be attorning? can you not be attorning? can he not be attorning? can we not be attorning? can you not be attorning? can they not be attorning?
Perfect
can I not have attorned? can you not have attorned? can he not have attorned? can we not have attorned? can you not have attorned? can they not have attorned?
V-ing perfect
can I not have been attorning? can you not have been attorning? can he not have been attorning? can we not have been attorning? can you not have been attorning? can they not have been attorning?