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 couldn't underquote you couldn't underquote he couldn't underquote we couldn't underquote you couldn't underquote they couldn't underquote	I couldn't be underquoting you couldn't be underquoting he couldn't be underquoting we couldn't be underquoting you couldn't be underquoting they couldn't be underquoting
Perfect	V-ing perfect
I couldn't have underquoted you couldn't have underquoted he couldn't have underquoted we couldn't have underquoted you couldn't have underquoted they couldn't have underquoted	I couldn't have been underquoting you couldn't have been underquoting he couldn't have been underquoting we couldn't have been underquoting you couldn't have been underquoting they couldn't 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
couldn't I underquote? couldn't you underquote? couldn't he underquote? couldn't we underquote? couldn't you underquote? couldn't they underquote?	couldn't I be underquoting? couldn't you be underquoting? couldn't he be underquoting? couldn't we be underquoting? couldn't you be underquoting? couldn't they be underquoting?
Perfect	V-ing perfect
couldn't I have underquoted? couldn't you have underquoted? couldn't he have underquoted? couldn't we have underquoted? couldn't you have underquoted? couldn't they have underquoted?	couldn't I have been underquoting? couldn't you have been underquoting? couldn't he have been underquoting? couldn't we have been underquoting? couldn't you have been underquoting? couldn't they have been underquoting?