English verb conjugation
COULD HARRUMPH

Regular verb: harrumph - harrumphed - harrumphed

Affirmation

Simple form	V-ing form
I could harrumph you could harrumph he could harrumph we could harrumph you could harrumph they could harrumph	I could be harrumphing you could be harrumphing he could be harrumphing we could be harrumphing you could be harrumphing they could be harrumphing
Perfect	V-ing perfect
I could have harrumphed you could have harrumphed he could have harrumphed we could have harrumphed you could have harrumphed they could have harrumphed	I could have been harrumphing you could have been harrumphing he could have been harrumphing we could have been harrumphing you could have been harrumphing they could have been harrumphing

Negation

Simple form	V-ing form
I could not harrumph you could not harrumph he could not harrumph we could not harrumph you could not harrumph they could not harrumph	I could not be harrumphing you could not be harrumphing he could not be harrumphing we could not be harrumphing you could not be harrumphing they could not be harrumphing
Perfect	V-ing perfect
I could not have harrumphed you could not have harrumphed he could not have harrumphed we could not have harrumphed you could not have harrumphed they could not have harrumphed	I could not have been harrumphing you could not have been harrumphing he could not have been harrumphing we could not have been harrumphing you could not have been harrumphing they could not have been harrumphing

Interrogative form

Simple form	V-ing form
could I harrumph? could you harrumph? could he harrumph? could we harrumph? could you harrumph? could they harrumph?	could I be harrumphing? could you be harrumphing? could he be harrumphing? could we be harrumphing? could you be harrumphing? could they be harrumphing?
Perfect	V-ing perfect
could I have harrumphed? could you have harrumphed? could he have harrumphed? could we have harrumphed? could you have harrumphed? could they have harrumphed?	could I have been harrumphing? could you have been harrumphing? could he have been harrumphing? could we have been harrumphing? could you have been harrumphing? could they have been harrumphing?

Interro-negative form

Simple form	V-ing form
could I not harrumph? could you not harrumph? could he not harrumph? could we not harrumph? could you not harrumph? could they not harrumph?	could I not be harrumphing? could you not be harrumphing? could he not be harrumphing? could we not be harrumphing? could you not be harrumphing? could they not be harrumphing?
Perfect	V-ing perfect
could I not have harrumphed? could you not have harrumphed? could he not have harrumphed? could we not have harrumphed? could you not have harrumphed? could they not have harrumphed?	could I not have been harrumphing? could you not have been harrumphing? could he not have been harrumphing? could we not have been harrumphing? could you not have been harrumphing? could they not have been harrumphing?