I could gesticulate you could gesticulate he could gesticulate we could gesticulate you could gesticulate they could gesticulate
V-ing form
I could be gesticulating you could be gesticulating he could be gesticulating we could be gesticulating you could be gesticulating they could be gesticulating
Perfect
I could have gesticulated you could have gesticulated he could have gesticulated we could have gesticulated you could have gesticulated they could have gesticulated
V-ing perfect
I could have been gesticulating you could have been gesticulating he could have been gesticulating we could have been gesticulating you could have been gesticulating they could have been gesticulating
Negation
Simple form
I could not gesticulate you could not gesticulate he could not gesticulate we could not gesticulate you could not gesticulate they could not gesticulate
V-ing form
I could not be gesticulating you could not be gesticulating he could not be gesticulating we could not be gesticulating you could not be gesticulating they could not be gesticulating
Perfect
I could not have gesticulated you could not have gesticulated he could not have gesticulated we could not have gesticulated you could not have gesticulated they could not have gesticulated
V-ing perfect
I could not have been gesticulating you could not have been gesticulating he could not have been gesticulating we could not have been gesticulating you could not have been gesticulating they could not have been gesticulating
Interrogative form
Simple form
could I gesticulate? could you gesticulate? could he gesticulate? could we gesticulate? could you gesticulate? could they gesticulate?
V-ing form
could I be gesticulating? could you be gesticulating? could he be gesticulating? could we be gesticulating? could you be gesticulating? could they be gesticulating?
Perfect
could I have gesticulated? could you have gesticulated? could he have gesticulated? could we have gesticulated? could you have gesticulated? could they have gesticulated?
V-ing perfect
could I have been gesticulating? could you have been gesticulating? could he have been gesticulating? could we have been gesticulating? could you have been gesticulating? could they have been gesticulating?
Interro-negative form
Simple form
could I not gesticulate? could you not gesticulate? could he not gesticulate? could we not gesticulate? could you not gesticulate? could they not gesticulate?
V-ing form
could I not be gesticulating? could you not be gesticulating? could he not be gesticulating? could we not be gesticulating? could you not be gesticulating? could they not be gesticulating?
Perfect
could I not have gesticulated? could you not have gesticulated? could he not have gesticulated? could we not have gesticulated? could you not have gesticulated? could they not have gesticulated?
V-ing perfect
could I not have been gesticulating? could you not have been gesticulating? could he not have been gesticulating? could we not have been gesticulating? could you not have been gesticulating? could they not have been gesticulating?