English verb conjugation
COULD DEFUSE

Regular verb: defuse - defused - defused

Affirmation

Simple form	V-ing form
I could defuse you could defuse she could defuse we could defuse you could defuse they could defuse	I could be defusing you could be defusing she could be defusing we could be defusing you could be defusing they could be defusing
Perfect	V-ing perfect
I could have defused you could have defused she could have defused we could have defused you could have defused they could have defused	I could have been defusing you could have been defusing she could have been defusing we could have been defusing you could have been defusing they could have been defusing

Negation

Simple form	V-ing form
I couldn't defuse you couldn't defuse she couldn't defuse we couldn't defuse you couldn't defuse they couldn't defuse	I couldn't be defusing you couldn't be defusing she couldn't be defusing we couldn't be defusing you couldn't be defusing they couldn't be defusing
Perfect	V-ing perfect
I couldn't have defused you couldn't have defused she couldn't have defused we couldn't have defused you couldn't have defused they couldn't have defused	I couldn't have been defusing you couldn't have been defusing she couldn't have been defusing we couldn't have been defusing you couldn't have been defusing they couldn't have been defusing

Interrogative form

Simple form	V-ing form
could I defuse? could you defuse? could she defuse? could we defuse? could you defuse? could they defuse?	could I be defusing? could you be defusing? could she be defusing? could we be defusing? could you be defusing? could they be defusing?
Perfect	V-ing perfect
could I have defused? could you have defused? could she have defused? could we have defused? could you have defused? could they have defused?	could I have been defusing? could you have been defusing? could she have been defusing? could we have been defusing? could you have been defusing? could they have been defusing?

Interro-negative form

Simple form	V-ing form
couldn't I defuse? couldn't you defuse? couldn't she defuse? couldn't we defuse? couldn't you defuse? couldn't they defuse?	couldn't I be defusing? couldn't you be defusing? couldn't she be defusing? couldn't we be defusing? couldn't you be defusing? couldn't they be defusing?
Perfect	V-ing perfect
couldn't I have defused? couldn't you have defused? couldn't she have defused? couldn't we have defused? couldn't you have defused? couldn't they have defused?	couldn't I have been defusing? couldn't you have been defusing? couldn't she have been defusing? couldn't we have been defusing? couldn't you have been defusing? couldn't they have been defusing?