I could involve you could involve she could involve we could involve you could involve they could involve
V-ing form
I could be involving you could be involving she could be involving we could be involving you could be involving they could be involving
Perfect
I could have involved you could have involved she could have involved we could have involved you could have involved they could have involved
V-ing perfect
I could have been involving you could have been involving she could have been involving we could have been involving you could have been involving they could have been involving
Negation
Simple form
I could not involve you could not involve she could not involve we could not involve you could not involve they could not involve
V-ing form
I could not be involving you could not be involving she could not be involving we could not be involving you could not be involving they could not be involving
Perfect
I could not have involved you could not have involved she could not have involved we could not have involved you could not have involved they could not have involved
V-ing perfect
I could not have been involving you could not have been involving she could not have been involving we could not have been involving you could not have been involving they could not have been involving
Interrogative form
Simple form
could I involve? could you involve? could she involve? could we involve? could you involve? could they involve?
V-ing form
could I be involving? could you be involving? could she be involving? could we be involving? could you be involving? could they be involving?
Perfect
could I have involved? could you have involved? could she have involved? could we have involved? could you have involved? could they have involved?
V-ing perfect
could I have been involving? could you have been involving? could she have been involving? could we have been involving? could you have been involving? could they have been involving?
Interro-negative form
Simple form
could I not involve? could you not involve? could she not involve? could we not involve? could you not involve? could they not involve?
V-ing form
could I not be involving? could you not be involving? could she not be involving? could we not be involving? could you not be involving? could they not be involving?
Perfect
could I not have involved? could you not have involved? could she not have involved? could we not have involved? could you not have involved? could they not have involved?
V-ing perfect
could I not have been involving? could you not have been involving? could she not have been involving? could we not have been involving? could you not have been involving? could they not have been involving?