English verb conjugation
COULD UNDERREPORT

Regular verb: underreport - underreported - underreported

Affirmation

Simple form	V-ing form
I could underreport you could underreport she could underreport we could underreport you could underreport they could underreport	I could be underreporting you could be underreporting she could be underreporting we could be underreporting you could be underreporting they could be underreporting
Perfect	V-ing perfect
I could have underreported you could have underreported she could have underreported we could have underreported you could have underreported they could have underreported	I could have been underreporting you could have been underreporting she could have been underreporting we could have been underreporting you could have been underreporting they could have been underreporting

Negation

Simple form	V-ing form
I couldn't underreport you couldn't underreport she couldn't underreport we couldn't underreport you couldn't underreport they couldn't underreport	I couldn't be underreporting you couldn't be underreporting she couldn't be underreporting we couldn't be underreporting you couldn't be underreporting they couldn't be underreporting
Perfect	V-ing perfect
I couldn't have underreported you couldn't have underreported she couldn't have underreported we couldn't have underreported you couldn't have underreported they couldn't have underreported	I couldn't have been underreporting you couldn't have been underreporting she couldn't have been underreporting we couldn't have been underreporting you couldn't have been underreporting they couldn't have been underreporting

Interrogative form

Simple form	V-ing form
could I underreport? could you underreport? could she underreport? could we underreport? could you underreport? could they underreport?	could I be underreporting? could you be underreporting? could she be underreporting? could we be underreporting? could you be underreporting? could they be underreporting?
Perfect	V-ing perfect
could I have underreported? could you have underreported? could she have underreported? could we have underreported? could you have underreported? could they have underreported?	could I have been underreporting? could you have been underreporting? could she have been underreporting? could we have been underreporting? could you have been underreporting? could they have been underreporting?

Interro-negative form

Simple form	V-ing form
couldn't I underreport? couldn't you underreport? couldn't she underreport? couldn't we underreport? couldn't you underreport? couldn't they underreport?	couldn't I be underreporting? couldn't you be underreporting? couldn't she be underreporting? couldn't we be underreporting? couldn't you be underreporting? couldn't they be underreporting?
Perfect	V-ing perfect
couldn't I have underreported? couldn't you have underreported? couldn't she have underreported? couldn't we have underreported? couldn't you have underreported? couldn't they have underreported?	couldn't I have been underreporting? couldn't you have been underreporting? couldn't she have been underreporting? couldn't we have been underreporting? couldn't you have been underreporting? couldn't they have been underreporting?