I could transfuse you could transfuse he could transfuse we could transfuse you could transfuse they could transfuse
V-ing form
I could be transfusing you could be transfusing he could be transfusing we could be transfusing you could be transfusing they could be transfusing
Perfect
I could have transfused you could have transfused he could have transfused we could have transfused you could have transfused they could have transfused
V-ing perfect
I could have been transfusing you could have been transfusing he could have been transfusing we could have been transfusing you could have been transfusing they could have been transfusing
Negation
Simple form
I could not transfuse you could not transfuse he could not transfuse we could not transfuse you could not transfuse they could not transfuse
V-ing form
I could not be transfusing you could not be transfusing he could not be transfusing we could not be transfusing you could not be transfusing they could not be transfusing
Perfect
I could not have transfused you could not have transfused he could not have transfused we could not have transfused you could not have transfused they could not have transfused
V-ing perfect
I could not have been transfusing you could not have been transfusing he could not have been transfusing we could not have been transfusing you could not have been transfusing they could not have been transfusing
Interrogative form
Simple form
could I transfuse? could you transfuse? could he transfuse? could we transfuse? could you transfuse? could they transfuse?
V-ing form
could I be transfusing? could you be transfusing? could he be transfusing? could we be transfusing? could you be transfusing? could they be transfusing?
Perfect
could I have transfused? could you have transfused? could he have transfused? could we have transfused? could you have transfused? could they have transfused?
V-ing perfect
could I have been transfusing? could you have been transfusing? could he have been transfusing? could we have been transfusing? could you have been transfusing? could they have been transfusing?
Interro-negative form
Simple form
could I not transfuse? could you not transfuse? could he not transfuse? could we not transfuse? could you not transfuse? could they not transfuse?
V-ing form
could I not be transfusing? could you not be transfusing? could he not be transfusing? could we not be transfusing? could you not be transfusing? could they not be transfusing?
Perfect
could I not have transfused? could you not have transfused? could he not have transfused? could we not have transfused? could you not have transfused? could they not have transfused?
V-ing perfect
could I not have been transfusing? could you not have been transfusing? could he not have been transfusing? could we not have been transfusing? could you not have been transfusing? could they not have been transfusing?