English verb conjugation
COULD UNTUNE

Regular verb: untune - untuned - untuned

Affirmation

Simple form	V-ing form
I could untune you could untune he could untune we could untune you could untune they could untune	I could be untuning you could be untuning he could be untuning we could be untuning you could be untuning they could be untuning
Perfect	V-ing perfect
I could have untuned you could have untuned he could have untuned we could have untuned you could have untuned they could have untuned	I could have been untuning you could have been untuning he could have been untuning we could have been untuning you could have been untuning they could have been untuning

Negation

Simple form	V-ing form
I could not untune you could not untune he could not untune we could not untune you could not untune they could not untune	I could not be untuning you could not be untuning he could not be untuning we could not be untuning you could not be untuning they could not be untuning
Perfect	V-ing perfect
I could not have untuned you could not have untuned he could not have untuned we could not have untuned you could not have untuned they could not have untuned	I could not have been untuning you could not have been untuning he could not have been untuning we could not have been untuning you could not have been untuning they could not have been untuning

Interrogative form

Simple form	V-ing form
could I untune? could you untune? could he untune? could we untune? could you untune? could they untune?	could I be untuning? could you be untuning? could he be untuning? could we be untuning? could you be untuning? could they be untuning?
Perfect	V-ing perfect
could I have untuned? could you have untuned? could he have untuned? could we have untuned? could you have untuned? could they have untuned?	could I have been untuning? could you have been untuning? could he have been untuning? could we have been untuning? could you have been untuning? could they have been untuning?

Interro-negative form

Simple form	V-ing form
could I not untune? could you not untune? could he not untune? could we not untune? could you not untune? could they not untune?	could I not be untuning? could you not be untuning? could he not be untuning? could we not be untuning? could you not be untuning? could they not be untuning?
Perfect	V-ing perfect
could I not have untuned? could you not have untuned? could he not have untuned? could we not have untuned? could you not have untuned? could they not have untuned?	could I not have been untuning? could you not have been untuning? could he not have been untuning? could we not have been untuning? could you not have been untuning? could they not have been untuning?