I should forget you should forget she should forget we should forget you should forget they should forget
V-ing form
I should be forgetting you should be forgetting she should be forgetting we should be forgetting you should be forgetting they should be forgetting
Perfect
I should have forgotten you should have forgotten she should have forgotten we should have forgotten you should have forgotten they should have forgotten
V-ing perfect
I should have been forgetting you should have been forgetting she should have been forgetting we should have been forgetting you should have been forgetting they should have been forgetting
Negation
Simple form
I should not forget you should not forget she should not forget we should not forget you should not forget they should not forget
V-ing form
I should not be forgetting you should not be forgetting she should not be forgetting we should not be forgetting you should not be forgetting they should not be forgetting
Perfect
I should not have forgotten you should not have forgotten she should not have forgotten we should not have forgotten you should not have forgotten they should not have forgotten
V-ing perfect
I should not have been forgetting you should not have been forgetting she should not have been forgetting we should not have been forgetting you should not have been forgetting they should not have been forgetting
Interrogative form
Simple form
should I forget? should you forget? should she forget? should we forget? should you forget? should they forget?
V-ing form
should I be forgetting? should you be forgetting? should she be forgetting? should we be forgetting? should you be forgetting? should they be forgetting?
Perfect
should I have forgotten? should you have forgotten? should she have forgotten? should we have forgotten? should you have forgotten? should they have forgotten?
V-ing perfect
should I have been forgetting? should you have been forgetting? should she have been forgetting? should we have been forgetting? should you have been forgetting? should they have been forgetting?
Interro-negative form
Simple form
should I not forget? should you not forget? should she not forget? should we not forget? should you not forget? should they not forget?
V-ing form
should I not be forgetting? should you not be forgetting? should she not be forgetting? should we not be forgetting? should you not be forgetting? should they not be forgetting?
Perfect
should I not have forgotten? should you not have forgotten? should she not have forgotten? should we not have forgotten? should you not have forgotten? should they not have forgotten?
V-ing perfect
should I not have been forgetting? should you not have been forgetting? should she not have been forgetting? should we not have been forgetting? should you not have been forgetting? should they not have been forgetting?