English verb conjugation
COULD INTERFUSE

Regular verb: interfuse - interfused - interfused

Affirmation

Simple form	V-ing form
I could interfuse you could interfuse he could interfuse we could interfuse you could interfuse they could interfuse	I could be interfusing you could be interfusing he could be interfusing we could be interfusing you could be interfusing they could be interfusing
Perfect	V-ing perfect
I could have interfused you could have interfused he could have interfused we could have interfused you could have interfused they could have interfused	I could have been interfusing you could have been interfusing he could have been interfusing we could have been interfusing you could have been interfusing they could have been interfusing

Negation

Simple form	V-ing form
I could not interfuse you could not interfuse he could not interfuse we could not interfuse you could not interfuse they could not interfuse	I could not be interfusing you could not be interfusing he could not be interfusing we could not be interfusing you could not be interfusing they could not be interfusing
Perfect	V-ing perfect
I could not have interfused you could not have interfused he could not have interfused we could not have interfused you could not have interfused they could not have interfused	I could not have been interfusing you could not have been interfusing he could not have been interfusing we could not have been interfusing you could not have been interfusing they could not have been interfusing

Interrogative form

Simple form	V-ing form
could I interfuse? could you interfuse? could he interfuse? could we interfuse? could you interfuse? could they interfuse?	could I be interfusing? could you be interfusing? could he be interfusing? could we be interfusing? could you be interfusing? could they be interfusing?
Perfect	V-ing perfect
could I have interfused? could you have interfused? could he have interfused? could we have interfused? could you have interfused? could they have interfused?	could I have been interfusing? could you have been interfusing? could he have been interfusing? could we have been interfusing? could you have been interfusing? could they have been interfusing?

Interro-negative form

Simple form	V-ing form
could I not interfuse? could you not interfuse? could he not interfuse? could we not interfuse? could you not interfuse? could they not interfuse?	could I not be interfusing? could you not be interfusing? could he not be interfusing? could we not be interfusing? could you not be interfusing? could they not be interfusing?
Perfect	V-ing perfect
could I not have interfused? could you not have interfused? could he not have interfused? could we not have interfused? could you not have interfused? could they not have interfused?	could I not have been interfusing? could you not have been interfusing? could he not have been interfusing? could we not have been interfusing? could you not have been interfusing? could they not have been interfusing?