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 can't attorn you can't attorn he can't attorn we can't attorn you can't attorn they can't attorn
V-ing form
I can't be attorning you can't be attorning he can't be attorning we can't be attorning you can't be attorning they can't be attorning
Perfect
I can't have attorned you can't have attorned he can't have attorned we can't have attorned you can't have attorned they can't have attorned
V-ing perfect
I can't have been attorning you can't have been attorning he can't have been attorning we can't have been attorning you can't have been attorning they can't 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't I attorn? can't you attorn? can't he attorn? can't we attorn? can't you attorn? can't they attorn?
V-ing form
can't I be attorning? can't you be attorning? can't he be attorning? can't we be attorning? can't you be attorning? can't they be attorning?
Perfect
can't I have attorned? can't you have attorned? can't he have attorned? can't we have attorned? can't you have attorned? can't they have attorned?
V-ing perfect
can't I have been attorning? can't you have been attorning? can't he have been attorning? can't we have been attorning? can't you have been attorning? can't they have been attorning?