English verb conjugation
COULD MACHINE-GUN

Regular verb: machine-gun - machine-guned - machine-guned

Affirmation

Simple form	V-ing form
I could machine-gun you could machine-gun she could machine-gun we could machine-gun you could machine-gun they could machine-gun	I could be machine-guning you could be machine-guning she could be machine-guning we could be machine-guning you could be machine-guning they could be machine-guning
Perfect	V-ing perfect
I could have machine-guned you could have machine-guned she could have machine-guned we could have machine-guned you could have machine-guned they could have machine-guned	I could have been machine-guning you could have been machine-guning she could have been machine-guning we could have been machine-guning you could have been machine-guning they could have been machine-guning

Negation

Simple form	V-ing form
I couldn't machine-gun you couldn't machine-gun she couldn't machine-gun we couldn't machine-gun you couldn't machine-gun they couldn't machine-gun	I couldn't be machine-guning you couldn't be machine-guning she couldn't be machine-guning we couldn't be machine-guning you couldn't be machine-guning they couldn't be machine-guning
Perfect	V-ing perfect
I couldn't have machine-guned you couldn't have machine-guned she couldn't have machine-guned we couldn't have machine-guned you couldn't have machine-guned they couldn't have machine-guned	I couldn't have been machine-guning you couldn't have been machine-guning she couldn't have been machine-guning we couldn't have been machine-guning you couldn't have been machine-guning they couldn't have been machine-guning

Interrogative form

Simple form	V-ing form
could I machine-gun? could you machine-gun? could she machine-gun? could we machine-gun? could you machine-gun? could they machine-gun?	could I be machine-guning? could you be machine-guning? could she be machine-guning? could we be machine-guning? could you be machine-guning? could they be machine-guning?
Perfect	V-ing perfect
could I have machine-guned? could you have machine-guned? could she have machine-guned? could we have machine-guned? could you have machine-guned? could they have machine-guned?	could I have been machine-guning? could you have been machine-guning? could she have been machine-guning? could we have been machine-guning? could you have been machine-guning? could they have been machine-guning?

Interro-negative form

Simple form	V-ing form
couldn't I machine-gun? couldn't you machine-gun? couldn't she machine-gun? couldn't we machine-gun? couldn't you machine-gun? couldn't they machine-gun?	couldn't I be machine-guning? couldn't you be machine-guning? couldn't she be machine-guning? couldn't we be machine-guning? couldn't you be machine-guning? couldn't they be machine-guning?
Perfect	V-ing perfect
couldn't I have machine-guned? couldn't you have machine-guned? couldn't she have machine-guned? couldn't we have machine-guned? couldn't you have machine-guned? couldn't they have machine-guned?	couldn't I have been machine-guning? couldn't you have been machine-guning? couldn't she have been machine-guning? couldn't we have been machine-guning? couldn't you have been machine-guning? couldn't they have been machine-guning?