English verb conjugation
COULD INTERFUSE

Regular verb: interfuse - interfused - interfused

Affirmation

Simple form	V-ing form
I could interfuse you could interfuse she could interfuse we could interfuse you could interfuse they could interfuse	I could be interfusing you could be interfusing she 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 she 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 she 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 couldn't interfuse you couldn't interfuse she couldn't interfuse we couldn't interfuse you couldn't interfuse they couldn't interfuse	I couldn't be interfusing you couldn't be interfusing she couldn't be interfusing we couldn't be interfusing you couldn't be interfusing they couldn't be interfusing
Perfect	V-ing perfect
I couldn't have interfused you couldn't have interfused she couldn't have interfused we couldn't have interfused you couldn't have interfused they couldn't have interfused	I couldn't have been interfusing you couldn't have been interfusing she couldn't have been interfusing we couldn't have been interfusing you couldn't have been interfusing they couldn't have been interfusing

Interrogative form

Simple form	V-ing form
could I interfuse? could you interfuse? could she interfuse? could we interfuse? could you interfuse? could they interfuse?	could I be interfusing? could you be interfusing? could she 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 she 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 she 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
couldn't I interfuse? couldn't you interfuse? couldn't she interfuse? couldn't we interfuse? couldn't you interfuse? couldn't they interfuse?	couldn't I be interfusing? couldn't you be interfusing? couldn't she be interfusing? couldn't we be interfusing? couldn't you be interfusing? couldn't they be interfusing?
Perfect	V-ing perfect
couldn't I have interfused? couldn't you have interfused? couldn't she have interfused? couldn't we have interfused? couldn't you have interfused? couldn't they have interfused?	couldn't I have been interfusing? couldn't you have been interfusing? couldn't she have been interfusing? couldn't we have been interfusing? couldn't you have been interfusing? couldn't they have been interfusing?