could secede
Regular verb: secede - seceded- seceded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could secede
you could secede
she could secede
we could secede
you could secede
they could secede 	I could be seceding
you could be seceding
she could be seceding
we could be seceding
you could be seceding
they could be seceding	I could have seceded
you could have seceded
she could have seceded
we could have seceded
you could have seceded
they could have seceded	I could have been seceding
you could have been seceding
she could have been seceding
we could have been seceding
you could have been seceding
they could have been seceding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't secede
you couldn't secede
she couldn't secede
we couldn't secede
you couldn't secede
they couldn't secede 	I couldn't be seceding
you couldn't be seceding
she couldn't be seceding
we couldn't be seceding
you couldn't be seceding
they couldn't be seceding	I couldn't have seceded
you couldn't have seceded
she couldn't have seceded
we couldn't have seceded
you couldn't have seceded
they couldn't have seceded	I couldn't have been seceding
you couldn't have been seceding
she couldn't have been seceding
we couldn't have been seceding
you couldn't have been seceding
they couldn't have been seceding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I secede?
could you secede?
could she secede?
could we secede?
could you secede?
could they secede? 	could I be seceding?
could you be seceding?
could she be seceding?
could we be seceding?
could you be seceding?
could they be seceding? 	could I have seceded?
could you have seceded?
could she have seceded?
could we have seceded?
could you have seceded?
could they have seceded? 	could I have been seceding?
could you have been seceding?
could she have been seceding?
could we have been seceding?
could you have been seceding?
could they have been seceding? 	

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