I should solve you should solve he should solve we should solve you should solve they should solve
V-ing form
I should be solving you should be solving he should be solving we should be solving you should be solving they should be solving
Perfect
I should have solved you should have solved he should have solved we should have solved you should have solved they should have solved
V-ing perfect
I should have been solving you should have been solving he should have been solving we should have been solving you should have been solving they should have been solving
Negation
Simple form
I should not solve you should not solve he should not solve we should not solve you should not solve they should not solve
V-ing form
I should not be solving you should not be solving he should not be solving we should not be solving you should not be solving they should not be solving
Perfect
I should not have solved you should not have solved he should not have solved we should not have solved you should not have solved they should not have solved
V-ing perfect
I should not have been solving you should not have been solving he should not have been solving we should not have been solving you should not have been solving they should not have been solving
Interrogative form
Simple form
should I solve? should you solve? should he solve? should we solve? should you solve? should they solve?
V-ing form
should I be solving? should you be solving? should he be solving? should we be solving? should you be solving? should they be solving?
Perfect
should I have solved? should you have solved? should he have solved? should we have solved? should you have solved? should they have solved?
V-ing perfect
should I have been solving? should you have been solving? should he have been solving? should we have been solving? should you have been solving? should they have been solving?
Interro-negative form
Simple form
should I not solve? should you not solve? should he not solve? should we not solve? should you not solve? should they not solve?
V-ing form
should I not be solving? should you not be solving? should he not be solving? should we not be solving? should you not be solving? should they not be solving?
Perfect
should I not have solved? should you not have solved? should he not have solved? should we not have solved? should you not have solved? should they not have solved?
V-ing perfect
should I not have been solving? should you not have been solving? should he not have been solving? should we not have been solving? should you not have been solving? should they not have been solving?