could accede
Regular verb: accede - acceded- acceded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could accede
you could accede
she could accede
we could accede
you could accede
they could accede 	I could be acceding
you could be acceding
she could be acceding
we could be acceding
you could be acceding
they could be acceding	I could have acceded
you could have acceded
she could have acceded
we could have acceded
you could have acceded
they could have acceded	I could have been acceding
you could have been acceding
she could have been acceding
we could have been acceding
you could have been acceding
they could have been acceding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't accede
you couldn't accede
she couldn't accede
we couldn't accede
you couldn't accede
they couldn't accede 	I couldn't be acceding
you couldn't be acceding
she couldn't be acceding
we couldn't be acceding
you couldn't be acceding
they couldn't be acceding	I couldn't have acceded
you couldn't have acceded
she couldn't have acceded
we couldn't have acceded
you couldn't have acceded
they couldn't have acceded	I couldn't have been acceding
you couldn't have been acceding
she couldn't have been acceding
we couldn't have been acceding
you couldn't have been acceding
they couldn't have been acceding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I accede?
could you accede?
could she accede?
could we accede?
could you accede?
could they accede? 	could I be acceding?
could you be acceding?
could she be acceding?
could we be acceding?
could you be acceding?
could they be acceding? 	could I have acceded?
could you have acceded?
could she have acceded?
could we have acceded?
could you have acceded?
could they have acceded? 	could I have been acceding?
could you have been acceding?
could she have been acceding?
could we have been acceding?
could you have been acceding?
could they have been acceding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I accede?
couldn't you accede?
couldn't she accede?
couldn't we accede?
couldn't you accede?
couldn't they accede? 	couldn't I be acceding?
couldn't you be acceding?
couldn't she be acceding?
couldn't we be acceding?
couldn't you be acceding?
couldn't they be acceding? 	couldn't I have acceded?
couldn't you have acceded?
couldn't she have acceded?
couldn't we have acceded?
couldn't you have acceded?
couldn't they have acceded? 	couldn't I have been acceding?
couldn't you have been acceding?
couldn't she have been acceding?
couldn't we have been acceding?
couldn't you have been acceding?
couldn't they have been acceding?