I should try you should try he should try we should try you should try they should try
V-ing form
I should be trying you should be trying he should be trying we should be trying you should be trying they should be trying
Perfect
I should have tried you should have tried he should have tried we should have tried you should have tried they should have tried
V-ing perfect
I should have been trying you should have been trying he should have been trying we should have been trying you should have been trying they should have been trying
Negation
Simple form
I should not try you should not try he should not try we should not try you should not try they should not try
V-ing form
I should not be trying you should not be trying he should not be trying we should not be trying you should not be trying they should not be trying
Perfect
I should not have tried you should not have tried he should not have tried we should not have tried you should not have tried they should not have tried
V-ing perfect
I should not have been trying you should not have been trying he should not have been trying we should not have been trying you should not have been trying they should not have been trying
Interrogative form
Simple form
should I try? should you try? should he try? should we try? should you try? should they try?
V-ing form
should I be trying? should you be trying? should he be trying? should we be trying? should you be trying? should they be trying?
Perfect
should I have tried? should you have tried? should he have tried? should we have tried? should you have tried? should they have tried?
V-ing perfect
should I have been trying? should you have been trying? should he have been trying? should we have been trying? should you have been trying? should they have been trying?
Interro-negative form
Simple form
should I not try? should you not try? should he not try? should we not try? should you not try? should they not try?
V-ing form
should I not be trying? should you not be trying? should he not be trying? should we not be trying? should you not be trying? should they not be trying?
Perfect
should I not have tried? should you not have tried? should he not have tried? should we not have tried? should you not have tried? should they not have tried?
V-ing perfect
should I not have been trying? should you not have been trying? should he not have been trying? should we not have been trying? should you not have been trying? should they not have been trying?