English verb conjugation
COULD STOOP

Regular verb: stoop - stooped - stooped

Affirmation

Simple form	V-ing form
I could stoop you could stoop he could stoop we could stoop you could stoop they could stoop	I could be stooping you could be stooping he could be stooping we could be stooping you could be stooping they could be stooping
Perfect	V-ing perfect
I could have stooped you could have stooped he could have stooped we could have stooped you could have stooped they could have stooped	I could have been stooping you could have been stooping he could have been stooping we could have been stooping you could have been stooping they could have been stooping

Negation

Simple form	V-ing form
I couldn't stoop you couldn't stoop he couldn't stoop we couldn't stoop you couldn't stoop they couldn't stoop	I couldn't be stooping you couldn't be stooping he couldn't be stooping we couldn't be stooping you couldn't be stooping they couldn't be stooping
Perfect	V-ing perfect
I couldn't have stooped you couldn't have stooped he couldn't have stooped we couldn't have stooped you couldn't have stooped they couldn't have stooped	I couldn't have been stooping you couldn't have been stooping he couldn't have been stooping we couldn't have been stooping you couldn't have been stooping they couldn't have been stooping

Interrogative form

Simple form	V-ing form
could I stoop? could you stoop? could he stoop? could we stoop? could you stoop? could they stoop?	could I be stooping? could you be stooping? could he be stooping? could we be stooping? could you be stooping? could they be stooping?
Perfect	V-ing perfect
could I have stooped? could you have stooped? could he have stooped? could we have stooped? could you have stooped? could they have stooped?	could I have been stooping? could you have been stooping? could he have been stooping? could we have been stooping? could you have been stooping? could they have been stooping?

Interro-negative form

Simple form	V-ing form
couldn't I stoop? couldn't you stoop? couldn't he stoop? couldn't we stoop? couldn't you stoop? couldn't they stoop?	couldn't I be stooping? couldn't you be stooping? couldn't he be stooping? couldn't we be stooping? couldn't you be stooping? couldn't they be stooping?
Perfect	V-ing perfect
couldn't I have stooped? couldn't you have stooped? couldn't he have stooped? couldn't we have stooped? couldn't you have stooped? couldn't they have stooped?	couldn't I have been stooping? couldn't you have been stooping? couldn't he have been stooping? couldn't we have been stooping? couldn't you have been stooping? couldn't they have been stooping?