I can secede you can secede she can secede we can secede you can secede they can secede
V-ing form
I can be seceding you can be seceding she can be seceding we can be seceding you can be seceding they can be seceding
Perfect
I can have seceded you can have seceded she can have seceded we can have seceded you can have seceded they can have seceded
V-ing perfect
I can have been seceding you can have been seceding she can have been seceding we can have been seceding you can have been seceding they can have been seceding
Negation
Simple form
I can't secede you can't secede she can't secede we can't secede you can't secede they can't secede
V-ing form
I can't be seceding you can't be seceding she can't be seceding we can't be seceding you can't be seceding they can't be seceding
Perfect
I can't have seceded you can't have seceded she can't have seceded we can't have seceded you can't have seceded they can't have seceded
V-ing perfect
I can't have been seceding you can't have been seceding she can't have been seceding we can't have been seceding you can't have been seceding they can't have been seceding
Interrogative form
Simple form
can I secede? can you secede? can she secede? can we secede? can you secede? can they secede?
V-ing form
can I be seceding? can you be seceding? can she be seceding? can we be seceding? can you be seceding? can they be seceding?
Perfect
can I have seceded? can you have seceded? can she have seceded? can we have seceded? can you have seceded? can they have seceded?
V-ing perfect
can I have been seceding? can you have been seceding? can she have been seceding? can we have been seceding? can you have been seceding? can they have been seceding?
Interro-negative form
Simple form
can't I secede? can't you secede? can't she secede? can't we secede? can't you secede? can't they secede?
V-ing form
can't I be seceding? can't you be seceding? can't she be seceding? can't we be seceding? can't you be seceding? can't they be seceding?
Perfect
can't I have seceded? can't you have seceded? can't she have seceded? can't we have seceded? can't you have seceded? can't they have seceded?
V-ing perfect
can't I have been seceding? can't you have been seceding? can't she have been seceding? can't we have been seceding? can't you have been seceding? can't they have been seceding?