English verb conjugation
COULD UNDERQUOTE

Regular verb: underquote - underquoted - underquoted

Affirmation

Simple form	V-ing form
I could underquote you could underquote he could underquote we could underquote you could underquote they could underquote	I could be underquoting you could be underquoting he could be underquoting we could be underquoting you could be underquoting they could be underquoting
Perfect	V-ing perfect
I could have underquoted you could have underquoted he could have underquoted we could have underquoted you could have underquoted they could have underquoted	I could have been underquoting you could have been underquoting he could have been underquoting we could have been underquoting you could have been underquoting they could have been underquoting

Negation

Simple form	V-ing form
I could not underquote you could not underquote he could not underquote we could not underquote you could not underquote they could not underquote	I could not be underquoting you could not be underquoting he could not be underquoting we could not be underquoting you could not be underquoting they could not be underquoting
Perfect	V-ing perfect
I could not have underquoted you could not have underquoted he could not have underquoted we could not have underquoted you could not have underquoted they could not have underquoted	I could not have been underquoting you could not have been underquoting he could not have been underquoting we could not have been underquoting you could not have been underquoting they could not have been underquoting

Interrogative form

Simple form	V-ing form
could I underquote? could you underquote? could he underquote? could we underquote? could you underquote? could they underquote?	could I be underquoting? could you be underquoting? could he be underquoting? could we be underquoting? could you be underquoting? could they be underquoting?
Perfect	V-ing perfect
could I have underquoted? could you have underquoted? could he have underquoted? could we have underquoted? could you have underquoted? could they have underquoted?	could I have been underquoting? could you have been underquoting? could he have been underquoting? could we have been underquoting? could you have been underquoting? could they have been underquoting?

Interro-negative form

Simple form	V-ing form
could I not underquote? could you not underquote? could he not underquote? could we not underquote? could you not underquote? could they not underquote?	could I not be underquoting? could you not be underquoting? could he not be underquoting? could we not be underquoting? could you not be underquoting? could they not be underquoting?
Perfect	V-ing perfect
could I not have underquoted? could you not have underquoted? could he not have underquoted? could we not have underquoted? could you not have underquoted? could they not have underquoted?	could I not have been underquoting? could you not have been underquoting? could he not have been underquoting? could we not have been underquoting? could you not have been underquoting? could they not have been underquoting?