I can attribute you can attribute he can attribute we can attribute you can attribute they can attribute
V-ing form
I can be attributing you can be attributing he can be attributing we can be attributing you can be attributing they can be attributing
Perfect
I can have attributed you can have attributed he can have attributed we can have attributed you can have attributed they can have attributed
V-ing perfect
I can have been attributing you can have been attributing he can have been attributing we can have been attributing you can have been attributing they can have been attributing
Negation
Simple form
I can't attribute you can't attribute he can't attribute we can't attribute you can't attribute they can't attribute
V-ing form
I can't be attributing you can't be attributing he can't be attributing we can't be attributing you can't be attributing they can't be attributing
Perfect
I can't have attributed you can't have attributed he can't have attributed we can't have attributed you can't have attributed they can't have attributed
V-ing perfect
I can't have been attributing you can't have been attributing he can't have been attributing we can't have been attributing you can't have been attributing they can't have been attributing
Interrogative form
Simple form
can I attribute? can you attribute? can he attribute? can we attribute? can you attribute? can they attribute?
V-ing form
can I be attributing? can you be attributing? can he be attributing? can we be attributing? can you be attributing? can they be attributing?
Perfect
can I have attributed? can you have attributed? can he have attributed? can we have attributed? can you have attributed? can they have attributed?
V-ing perfect
can I have been attributing? can you have been attributing? can he have been attributing? can we have been attributing? can you have been attributing? can they have been attributing?
Interro-negative form
Simple form
can't I attribute? can't you attribute? can't he attribute? can't we attribute? can't you attribute? can't they attribute?
V-ing form
can't I be attributing? can't you be attributing? can't he be attributing? can't we be attributing? can't you be attributing? can't they be attributing?
Perfect
can't I have attributed? can't you have attributed? can't he have attributed? can't we have attributed? can't you have attributed? can't they have attributed?
V-ing perfect
can't I have been attributing? can't you have been attributing? can't he have been attributing? can't we have been attributing? can't you have been attributing? can't they have been attributing?