could roadblock
Regular verb: roadblock - roadblocked- roadblocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could roadblock
you could roadblock
she could roadblock
we could roadblock
you could roadblock
they could roadblock 	I could be roadblocking
you could be roadblocking
she could be roadblocking
we could be roadblocking
you could be roadblocking
they could be roadblocking	I could have roadblocked
you could have roadblocked
she could have roadblocked
we could have roadblocked
you could have roadblocked
they could have roadblocked	I could have been roadblocking
you could have been roadblocking
she could have been roadblocking
we could have been roadblocking
you could have been roadblocking
they could have been roadblocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not roadblock
you could not roadblock
she could not roadblock
we could not roadblock
you could not roadblock
they could not roadblock 	I could not be roadblocking
you could not be roadblocking
she could not be roadblocking
we could not be roadblocking
you could not be roadblocking
they could not be roadblocking	I could not have roadblocked
you could not have roadblocked
she could not have roadblocked
we could not have roadblocked
you could not have roadblocked
they could not have roadblocked	I could not have been roadblocking
you could not have been roadblocking
she could not have been roadblocking
we could not have been roadblocking
you could not have been roadblocking
they could not have been roadblocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I roadblock?
could you roadblock?
could she roadblock?
could we roadblock?
could you roadblock?
could they roadblock? 	could I be roadblocking?
could you be roadblocking?
could she be roadblocking?
could we be roadblocking?
could you be roadblocking?
could they be roadblocking? 	could I have roadblocked?
could you have roadblocked?
could she have roadblocked?
could we have roadblocked?
could you have roadblocked?
could they have roadblocked? 	could I have been roadblocking?
could you have been roadblocking?
could she have been roadblocking?
could we have been roadblocking?
could you have been roadblocking?
could they have been roadblocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not roadblock?
could you not roadblock?
could she not roadblock?
could we not roadblock?
could you not roadblock?
could they not roadblock? 	could I not be roadblocking?
could you not be roadblocking?
could she not be roadblocking?
could we not be roadblocking?
could you not be roadblocking?
could they not be roadblocking? 	could I not have roadblocked?
could you not have roadblocked?
could she not have roadblocked?
could we not have roadblocked?
could you not have roadblocked?
could they not have roadblocked? 	could I not have been roadblocking?
could you not have been roadblocking?
could she not have been roadblocking?
could we not have been roadblocking?
could you not have been roadblocking?
could they not have been roadblocking?