I should start you should start she should start we should start you should start they should start
V-ing form
I should be starting you should be starting she should be starting we should be starting you should be starting they should be starting
Perfect
I should have started you should have started she should have started we should have started you should have started they should have started
V-ing perfect
I should have been starting you should have been starting she should have been starting we should have been starting you should have been starting they should have been starting
Negation
Simple form
I should not start you should not start she should not start we should not start you should not start they should not start
V-ing form
I should not be starting you should not be starting she should not be starting we should not be starting you should not be starting they should not be starting
Perfect
I should not have started you should not have started she should not have started we should not have started you should not have started they should not have started
V-ing perfect
I should not have been starting you should not have been starting she should not have been starting we should not have been starting you should not have been starting they should not have been starting
Interrogative form
Simple form
should I start? should you start? should she start? should we start? should you start? should they start?
V-ing form
should I be starting? should you be starting? should she be starting? should we be starting? should you be starting? should they be starting?
Perfect
should I have started? should you have started? should she have started? should we have started? should you have started? should they have started?
V-ing perfect
should I have been starting? should you have been starting? should she have been starting? should we have been starting? should you have been starting? should they have been starting?
Interro-negative form
Simple form
should I not start? should you not start? should she not start? should we not start? should you not start? should they not start?
V-ing form
should I not be starting? should you not be starting? should she not be starting? should we not be starting? should you not be starting? should they not be starting?
Perfect
should I not have started? should you not have started? should she not have started? should we not have started? should you not have started? should they not have started?
V-ing perfect
should I not have been starting? should you not have been starting? should she not have been starting? should we not have been starting? should you not have been starting? should they not have been starting?