I can federate you can federate he can federate we can federate you can federate they can federate
V-ing form
I can be federating you can be federating he can be federating we can be federating you can be federating they can be federating
Perfect
I can have federated you can have federated he can have federated we can have federated you can have federated they can have federated
V-ing perfect
I can have been federating you can have been federating he can have been federating we can have been federating you can have been federating they can have been federating
Negation
Simple form
I can't federate you can't federate he can't federate we can't federate you can't federate they can't federate
V-ing form
I can't be federating you can't be federating he can't be federating we can't be federating you can't be federating they can't be federating
Perfect
I can't have federated you can't have federated he can't have federated we can't have federated you can't have federated they can't have federated
V-ing perfect
I can't have been federating you can't have been federating he can't have been federating we can't have been federating you can't have been federating they can't have been federating
Interrogative form
Simple form
can I federate? can you federate? can he federate? can we federate? can you federate? can they federate?
V-ing form
can I be federating? can you be federating? can he be federating? can we be federating? can you be federating? can they be federating?
Perfect
can I have federated? can you have federated? can he have federated? can we have federated? can you have federated? can they have federated?
V-ing perfect
can I have been federating? can you have been federating? can he have been federating? can we have been federating? can you have been federating? can they have been federating?
Interro-negative form
Simple form
can't I federate? can't you federate? can't he federate? can't we federate? can't you federate? can't they federate?
V-ing form
can't I be federating? can't you be federating? can't he be federating? can't we be federating? can't you be federating? can't they be federating?
Perfect
can't I have federated? can't you have federated? can't he have federated? can't we have federated? can't you have federated? can't they have federated?
V-ing perfect
can't I have been federating? can't you have been federating? can't he have been federating? can't we have been federating? can't you have been federating? can't they have been federating?