could dock
Regular verb: dock - docked- docked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could dock
you could dock
she could dock
we could dock
you could dock
they could dock 	I could be docking
you could be docking
she could be docking
we could be docking
you could be docking
they could be docking	I could have docked
you could have docked
she could have docked
we could have docked
you could have docked
they could have docked	I could have been docking
you could have been docking
she could have been docking
we could have been docking
you could have been docking
they could have been docking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not dock
you could not dock
she could not dock
we could not dock
you could not dock
they could not dock 	I could not be docking
you could not be docking
she could not be docking
we could not be docking
you could not be docking
they could not be docking	I could not have docked
you could not have docked
she could not have docked
we could not have docked
you could not have docked
they could not have docked	I could not have been docking
you could not have been docking
she could not have been docking
we could not have been docking
you could not have been docking
they could not have been docking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I dock?
could you dock?
could she dock?
could we dock?
could you dock?
could they dock? 	could I be docking?
could you be docking?
could she be docking?
could we be docking?
could you be docking?
could they be docking? 	could I have docked?
could you have docked?
could she have docked?
could we have docked?
could you have docked?
could they have docked? 	could I have been docking?
could you have been docking?
could she have been docking?
could we have been docking?
could you have been docking?
could they have been docking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not dock?
could you not dock?
could she not dock?
could we not dock?
could you not dock?
could they not dock? 	could I not be docking?
could you not be docking?
could she not be docking?
could we not be docking?
could you not be docking?
could they not be docking? 	could I not have docked?
could you not have docked?
could she not have docked?
could we not have docked?
could you not have docked?
could they not have docked? 	could I not have been docking?
could you not have been docking?
could she not have been docking?
could we not have been docking?
could you not have been docking?
could they not have been docking?