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