I could infuse you could infuse she could infuse we could infuse you could infuse they could infuse
V-ing form
I could be infusing you could be infusing she could be infusing we could be infusing you could be infusing they could be infusing
Perfect
I could have infused you could have infused she could have infused we could have infused you could have infused they could have infused
V-ing perfect
I could have been infusing you could have been infusing she could have been infusing we could have been infusing you could have been infusing they could have been infusing
Negation
Simple form
I could not infuse you could not infuse she could not infuse we could not infuse you could not infuse they could not infuse
V-ing form
I could not be infusing you could not be infusing she could not be infusing we could not be infusing you could not be infusing they could not be infusing
Perfect
I could not have infused you could not have infused she could not have infused we could not have infused you could not have infused they could not have infused
V-ing perfect
I could not have been infusing you could not have been infusing she could not have been infusing we could not have been infusing you could not have been infusing they could not have been infusing
Interrogative form
Simple form
could I infuse? could you infuse? could she infuse? could we infuse? could you infuse? could they infuse?
V-ing form
could I be infusing? could you be infusing? could she be infusing? could we be infusing? could you be infusing? could they be infusing?
Perfect
could I have infused? could you have infused? could she have infused? could we have infused? could you have infused? could they have infused?
V-ing perfect
could I have been infusing? could you have been infusing? could she have been infusing? could we have been infusing? could you have been infusing? could they have been infusing?
Interro-negative form
Simple form
could I not infuse? could you not infuse? could she not infuse? could we not infuse? could you not infuse? could they not infuse?
V-ing form
could I not be infusing? could you not be infusing? could she not be infusing? could we not be infusing? could you not be infusing? could they not be infusing?
Perfect
could I not have infused? could you not have infused? could she not have infused? could we not have infused? could you not have infused? could they not have infused?
V-ing perfect
could I not have been infusing? could you not have been infusing? could she not have been infusing? could we not have been infusing? could you not have been infusing? could they not have been infusing?