English verb conjugation
COULD ROADBLOCK

Regular verb: roadblock - roadblocked - roadblocked

Affirmation

Simple form	V-ing form
I could roadblock you could roadblock he could roadblock we could roadblock you could roadblock they could roadblock	I could be roadblocking you could be roadblocking he could be roadblocking we could be roadblocking you could be roadblocking they could be roadblocking
Perfect	V-ing perfect
I could have roadblocked you could have roadblocked he 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 he 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
I couldn't roadblock you couldn't roadblock he couldn't roadblock we couldn't roadblock you couldn't roadblock they couldn't roadblock	I couldn't be roadblocking you couldn't be roadblocking he couldn't be roadblocking we couldn't be roadblocking you couldn't be roadblocking they couldn't be roadblocking
Perfect	V-ing perfect
I couldn't have roadblocked you couldn't have roadblocked he couldn't have roadblocked we couldn't have roadblocked you couldn't have roadblocked they couldn't have roadblocked	I couldn't have been roadblocking you couldn't have been roadblocking he couldn't have been roadblocking we couldn't have been roadblocking you couldn't have been roadblocking they couldn't have been roadblocking

Interrogative form

Simple form	V-ing form
could I roadblock? could you roadblock? could he roadblock? could we roadblock? could you roadblock? could they roadblock?	could I be roadblocking? could you be roadblocking? could he be roadblocking? could we be roadblocking? could you be roadblocking? could they be roadblocking?
Perfect	V-ing perfect
could I have roadblocked? could you have roadblocked? could he 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 he 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
couldn't I roadblock? couldn't you roadblock? couldn't he roadblock? couldn't we roadblock? couldn't you roadblock? couldn't they roadblock?	couldn't I be roadblocking? couldn't you be roadblocking? couldn't he be roadblocking? couldn't we be roadblocking? couldn't you be roadblocking? couldn't they be roadblocking?
Perfect	V-ing perfect
couldn't I have roadblocked? couldn't you have roadblocked? couldn't he have roadblocked? couldn't we have roadblocked? couldn't you have roadblocked? couldn't they have roadblocked?	couldn't I have been roadblocking? couldn't you have been roadblocking? couldn't he have been roadblocking? couldn't we have been roadblocking? couldn't you have been roadblocking? couldn't they have been roadblocking?