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