I could convolute you could convolute he could convolute we could convolute you could convolute they could convolute
V-ing form
I could be convoluting you could be convoluting he could be convoluting we could be convoluting you could be convoluting they could be convoluting
Perfect
I could have convoluted you could have convoluted he could have convoluted we could have convoluted you could have convoluted they could have convoluted
V-ing perfect
I could have been convoluting you could have been convoluting he could have been convoluting we could have been convoluting you could have been convoluting they could have been convoluting
Negation
Simple form
I could not convolute you could not convolute he could not convolute we could not convolute you could not convolute they could not convolute
V-ing form
I could not be convoluting you could not be convoluting he could not be convoluting we could not be convoluting you could not be convoluting they could not be convoluting
Perfect
I could not have convoluted you could not have convoluted he could not have convoluted we could not have convoluted you could not have convoluted they could not have convoluted
V-ing perfect
I could not have been convoluting you could not have been convoluting he could not have been convoluting we could not have been convoluting you could not have been convoluting they could not have been convoluting
Interrogative form
Simple form
could I convolute? could you convolute? could he convolute? could we convolute? could you convolute? could they convolute?
V-ing form
could I be convoluting? could you be convoluting? could he be convoluting? could we be convoluting? could you be convoluting? could they be convoluting?
Perfect
could I have convoluted? could you have convoluted? could he have convoluted? could we have convoluted? could you have convoluted? could they have convoluted?
V-ing perfect
could I have been convoluting? could you have been convoluting? could he have been convoluting? could we have been convoluting? could you have been convoluting? could they have been convoluting?
Interro-negative form
Simple form
could I not convolute? could you not convolute? could he not convolute? could we not convolute? could you not convolute? could they not convolute?
V-ing form
could I not be convoluting? could you not be convoluting? could he not be convoluting? could we not be convoluting? could you not be convoluting? could they not be convoluting?
Perfect
could I not have convoluted? could you not have convoluted? could he not have convoluted? could we not have convoluted? could you not have convoluted? could they not have convoluted?
V-ing perfect
could I not have been convoluting? could you not have been convoluting? could he not have been convoluting? could we not have been convoluting? could you not have been convoluting? could they not have been convoluting?