could blockade
Regular verb: blockade - blockaded- blockaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could blockade
you could blockade
she could blockade
we could blockade
you could blockade
they could blockade 	I could be blockading
you could be blockading
she could be blockading
we could be blockading
you could be blockading
they could be blockading	I could have blockaded
you could have blockaded
she could have blockaded
we could have blockaded
you could have blockaded
they could have blockaded	I could have been blockading
you could have been blockading
she could have been blockading
we could have been blockading
you could have been blockading
they could have been blockading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't blockade
you couldn't blockade
she couldn't blockade
we couldn't blockade
you couldn't blockade
they couldn't blockade 	I couldn't be blockading
you couldn't be blockading
she couldn't be blockading
we couldn't be blockading
you couldn't be blockading
they couldn't be blockading	I couldn't have blockaded
you couldn't have blockaded
she couldn't have blockaded
we couldn't have blockaded
you couldn't have blockaded
they couldn't have blockaded	I couldn't have been blockading
you couldn't have been blockading
she couldn't have been blockading
we couldn't have been blockading
you couldn't have been blockading
they couldn't have been blockading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I blockade?
could you blockade?
could she blockade?
could we blockade?
could you blockade?
could they blockade? 	could I be blockading?
could you be blockading?
could she be blockading?
could we be blockading?
could you be blockading?
could they be blockading? 	could I have blockaded?
could you have blockaded?
could she have blockaded?
could we have blockaded?
could you have blockaded?
could they have blockaded? 	could I have been blockading?
could you have been blockading?
could she have been blockading?
could we have been blockading?
could you have been blockading?
could they have been blockading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I blockade?
couldn't you blockade?
couldn't she blockade?
couldn't we blockade?
couldn't you blockade?
couldn't they blockade? 	couldn't I be blockading?
couldn't you be blockading?
couldn't she be blockading?
couldn't we be blockading?
couldn't you be blockading?
couldn't they be blockading? 	couldn't I have blockaded?
couldn't you have blockaded?
couldn't she have blockaded?
couldn't we have blockaded?
couldn't you have blockaded?
couldn't they have blockaded? 	couldn't I have been blockading?
couldn't you have been blockading?
couldn't she have been blockading?
couldn't we have been blockading?
couldn't you have been blockading?
couldn't they have been blockading?