I should thank you should thank she should thank we should thank you should thank they should thank
V-ing form
I should be thanking you should be thanking she should be thanking we should be thanking you should be thanking they should be thanking
Perfect
I should have thanked you should have thanked she should have thanked we should have thanked you should have thanked they should have thanked
V-ing perfect
I should have been thanking you should have been thanking she should have been thanking we should have been thanking you should have been thanking they should have been thanking
Negation
Simple form
I should not thank you should not thank she should not thank we should not thank you should not thank they should not thank
V-ing form
I should not be thanking you should not be thanking she should not be thanking we should not be thanking you should not be thanking they should not be thanking
Perfect
I should not have thanked you should not have thanked she should not have thanked we should not have thanked you should not have thanked they should not have thanked
V-ing perfect
I should not have been thanking you should not have been thanking she should not have been thanking we should not have been thanking you should not have been thanking they should not have been thanking
Interrogative form
Simple form
should I thank? should you thank? should she thank? should we thank? should you thank? should they thank?
V-ing form
should I be thanking? should you be thanking? should she be thanking? should we be thanking? should you be thanking? should they be thanking?
Perfect
should I have thanked? should you have thanked? should she 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 she have been thanking? should we have been thanking? should you have been thanking? should they have been thanking?
Interro-negative form
Simple form
should I not thank? should you not thank? should she not thank? should we not thank? should you not thank? should they not thank?
V-ing form
should I not be thanking? should you not be thanking? should she not be thanking? should we not be thanking? should you not be thanking? should they not be thanking?
Perfect
should I not have thanked? should you not have thanked? should she not have thanked? should we not have thanked? should you not have thanked? should they not have thanked?
V-ing perfect
should I not have been thanking? should you not have been thanking? should she not have been thanking? should we not have been thanking? should you not have been thanking? should they not have been thanking?