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