I should swim you should swim she should swim we should swim you should swim they should swim
V-ing form
I should be swimming you should be swimming she should be swimming we should be swimming you should be swimming they should be swimming
Perfect
I should have swum you should have swum she should have swum we should have swum you should have swum they should have swum
V-ing perfect
I should have been swimming you should have been swimming she should have been swimming we should have been swimming you should have been swimming they should have been swimming
Negation
Simple form
I should not swim you should not swim she should not swim we should not swim you should not swim they should not swim
V-ing form
I should not be swimming you should not be swimming she should not be swimming we should not be swimming you should not be swimming they should not be swimming
Perfect
I should not have swum you should not have swum she should not have swum we should not have swum you should not have swum they should not have swum
V-ing perfect
I should not have been swimming you should not have been swimming she should not have been swimming we should not have been swimming you should not have been swimming they should not have been swimming
Interrogative form
Simple form
should I swim? should you swim? should she swim? should we swim? should you swim? should they swim?
V-ing form
should I be swimming? should you be swimming? should she be swimming? should we be swimming? should you be swimming? should they be swimming?
Perfect
should I have swum? should you have swum? should she have swum? should we have swum? should you have swum? should they have swum?
V-ing perfect
should I have been swimming? should you have been swimming? should she have been swimming? should we have been swimming? should you have been swimming? should they have been swimming?
Interro-negative form
Simple form
should I not swim? should you not swim? should she not swim? should we not swim? should you not swim? should they not swim?
V-ing form
should I not be swimming? should you not be swimming? should she not be swimming? should we not be swimming? should you not be swimming? should they not be swimming?
Perfect
should I not have swum? should you not have swum? should she not have swum? should we not have swum? should you not have swum? should they not have swum?
V-ing perfect
should I not have been swimming? should you not have been swimming? should she not have been swimming? should we not have been swimming? should you not have been swimming? should they not have been swimming?