I should federate you should federate she should federate we should federate you should federate they should federate
V-ing form
I should be federating you should be federating she should be federating we should be federating you should be federating they should be federating
Perfect
I should have federated you should have federated she should have federated we should have federated you should have federated they should have federated
V-ing perfect
I should have been federating you should have been federating she should have been federating we should have been federating you should have been federating they should have been federating
Negation
Simple form
I should not federate you should not federate she should not federate we should not federate you should not federate they should not federate
V-ing form
I should not be federating you should not be federating she should not be federating we should not be federating you should not be federating they should not be federating
Perfect
I should not have federated you should not have federated she should not have federated we should not have federated you should not have federated they should not have federated
V-ing perfect
I should not have been federating you should not have been federating she should not have been federating we should not have been federating you should not have been federating they should not have been federating
Interrogative form
Simple form
should I federate? should you federate? should she federate? should we federate? should you federate? should they federate?
V-ing form
should I be federating? should you be federating? should she be federating? should we be federating? should you be federating? should they be federating?
Perfect
should I have federated? should you have federated? should she have federated? should we have federated? should you have federated? should they have federated?
V-ing perfect
should I have been federating? should you have been federating? should she have been federating? should we have been federating? should you have been federating? should they have been federating?
Interro-negative form
Simple form
should I not federate? should you not federate? should she not federate? should we not federate? should you not federate? should they not federate?
V-ing form
should I not be federating? should you not be federating? should she not be federating? should we not be federating? should you not be federating? should they not be federating?
Perfect
should I not have federated? should you not have federated? should she not have federated? should we not have federated? should you not have federated? should they not have federated?
V-ing perfect
should I not have been federating? should you not have been federating? should she not have been federating? should we not have been federating? should you not have been federating? should they not have been federating?