I could chloroform you could chloroform he could chloroform we could chloroform you could chloroform they could chloroform
V-ing form
I could be chloroforming you could be chloroforming he could be chloroforming we could be chloroforming you could be chloroforming they could be chloroforming
Perfect
I could have chloroformed you could have chloroformed he could have chloroformed we could have chloroformed you could have chloroformed they could have chloroformed
V-ing perfect
I could have been chloroforming you could have been chloroforming he could have been chloroforming we could have been chloroforming you could have been chloroforming they could have been chloroforming
Negation
Simple form
I could not chloroform you could not chloroform he could not chloroform we could not chloroform you could not chloroform they could not chloroform
V-ing form
I could not be chloroforming you could not be chloroforming he could not be chloroforming we could not be chloroforming you could not be chloroforming they could not be chloroforming
Perfect
I could not have chloroformed you could not have chloroformed he could not have chloroformed we could not have chloroformed you could not have chloroformed they could not have chloroformed
V-ing perfect
I could not have been chloroforming you could not have been chloroforming he could not have been chloroforming we could not have been chloroforming you could not have been chloroforming they could not have been chloroforming
Interrogative form
Simple form
could I chloroform? could you chloroform? could he chloroform? could we chloroform? could you chloroform? could they chloroform?
V-ing form
could I be chloroforming? could you be chloroforming? could he be chloroforming? could we be chloroforming? could you be chloroforming? could they be chloroforming?
Perfect
could I have chloroformed? could you have chloroformed? could he have chloroformed? could we have chloroformed? could you have chloroformed? could they have chloroformed?
V-ing perfect
could I have been chloroforming? could you have been chloroforming? could he have been chloroforming? could we have been chloroforming? could you have been chloroforming? could they have been chloroforming?
Interro-negative form
Simple form
could I not chloroform? could you not chloroform? could he not chloroform? could we not chloroform? could you not chloroform? could they not chloroform?
V-ing form
could I not be chloroforming? could you not be chloroforming? could he not be chloroforming? could we not be chloroforming? could you not be chloroforming? could they not be chloroforming?
Perfect
could I not have chloroformed? could you not have chloroformed? could he not have chloroformed? could we not have chloroformed? could you not have chloroformed? could they not have chloroformed?
V-ing perfect
could I not have been chloroforming? could you not have been chloroforming? could he not have been chloroforming? could we not have been chloroforming? could you not have been chloroforming? could they not have been chloroforming?