English verb conjugation
COULD GRUNT

Regular verb: grunt - grunted - grunted

Affirmation

Simple form	V-ing form
I could grunt you could grunt he could grunt we could grunt you could grunt they could grunt	I could be grunting you could be grunting he could be grunting we could be grunting you could be grunting they could be grunting
Perfect	V-ing perfect
I could have grunted you could have grunted he could have grunted we could have grunted you could have grunted they could have grunted	I could have been grunting you could have been grunting he could have been grunting we could have been grunting you could have been grunting they could have been grunting

Negation

Simple form	V-ing form
I couldn't grunt you couldn't grunt he couldn't grunt we couldn't grunt you couldn't grunt they couldn't grunt	I couldn't be grunting you couldn't be grunting he couldn't be grunting we couldn't be grunting you couldn't be grunting they couldn't be grunting
Perfect	V-ing perfect
I couldn't have grunted you couldn't have grunted he couldn't have grunted we couldn't have grunted you couldn't have grunted they couldn't have grunted	I couldn't have been grunting you couldn't have been grunting he couldn't have been grunting we couldn't have been grunting you couldn't have been grunting they couldn't have been grunting

Interrogative form

Simple form	V-ing form
could I grunt? could you grunt? could he grunt? could we grunt? could you grunt? could they grunt?	could I be grunting? could you be grunting? could he be grunting? could we be grunting? could you be grunting? could they be grunting?
Perfect	V-ing perfect
could I have grunted? could you have grunted? could he have grunted? could we have grunted? could you have grunted? could they have grunted?	could I have been grunting? could you have been grunting? could he have been grunting? could we have been grunting? could you have been grunting? could they have been grunting?

Interro-negative form

Simple form	V-ing form
couldn't I grunt? couldn't you grunt? couldn't he grunt? couldn't we grunt? couldn't you grunt? couldn't they grunt?	couldn't I be grunting? couldn't you be grunting? couldn't he be grunting? couldn't we be grunting? couldn't you be grunting? couldn't they be grunting?
Perfect	V-ing perfect
couldn't I have grunted? couldn't you have grunted? couldn't he have grunted? couldn't we have grunted? couldn't you have grunted? couldn't they have grunted?	couldn't I have been grunting? couldn't you have been grunting? couldn't he have been grunting? couldn't we have been grunting? couldn't you have been grunting? couldn't they have been grunting?