I should backsolve you should backsolve she should backsolve we should backsolve you should backsolve they should backsolve
V-ing form
I should be backsolving you should be backsolving she should be backsolving we should be backsolving you should be backsolving they should be backsolving
Perfect
I should have backsolved you should have backsolved she should have backsolved we should have backsolved you should have backsolved they should have backsolved
V-ing perfect
I should have been backsolving you should have been backsolving she should have been backsolving we should have been backsolving you should have been backsolving they should have been backsolving
Negation
Simple form
I should not backsolve you should not backsolve she should not backsolve we should not backsolve you should not backsolve they should not backsolve
V-ing form
I should not be backsolving you should not be backsolving she should not be backsolving we should not be backsolving you should not be backsolving they should not be backsolving
Perfect
I should not have backsolved you should not have backsolved she should not have backsolved we should not have backsolved you should not have backsolved they should not have backsolved
V-ing perfect
I should not have been backsolving you should not have been backsolving she should not have been backsolving we should not have been backsolving you should not have been backsolving they should not have been backsolving
Interrogative form
Simple form
should I backsolve? should you backsolve? should she backsolve? should we backsolve? should you backsolve? should they backsolve?
V-ing form
should I be backsolving? should you be backsolving? should she be backsolving? should we be backsolving? should you be backsolving? should they be backsolving?
Perfect
should I have backsolved? should you have backsolved? should she have backsolved? should we have backsolved? should you have backsolved? should they have backsolved?
V-ing perfect
should I have been backsolving? should you have been backsolving? should she have been backsolving? should we have been backsolving? should you have been backsolving? should they have been backsolving?
Interro-negative form
Simple form
should I not backsolve? should you not backsolve? should she not backsolve? should we not backsolve? should you not backsolve? should they not backsolve?
V-ing form
should I not be backsolving? should you not be backsolving? should she not be backsolving? should we not be backsolving? should you not be backsolving? should they not be backsolving?
Perfect
should I not have backsolved? should you not have backsolved? should she not have backsolved? should we not have backsolved? should you not have backsolved? should they not have backsolved?
V-ing perfect
should I not have been backsolving? should you not have been backsolving? should she not have been backsolving? should we not have been backsolving? should you not have been backsolving? should they not have been backsolving?