English verb conjugation
COULD STEW

Regular verb: stew - stewed - stewed

Affirmation

Simple form	V-ing form
I could stew you could stew he could stew we could stew you could stew they could stew	I could be stewing you could be stewing he could be stewing we could be stewing you could be stewing they could be stewing
Perfect	V-ing perfect
I could have stewed you could have stewed he could have stewed we could have stewed you could have stewed they could have stewed	I could have been stewing you could have been stewing he could have been stewing we could have been stewing you could have been stewing they could have been stewing

Negation

Simple form	V-ing form
I couldn't stew you couldn't stew he couldn't stew we couldn't stew you couldn't stew they couldn't stew	I couldn't be stewing you couldn't be stewing he couldn't be stewing we couldn't be stewing you couldn't be stewing they couldn't be stewing
Perfect	V-ing perfect
I couldn't have stewed you couldn't have stewed he couldn't have stewed we couldn't have stewed you couldn't have stewed they couldn't have stewed	I couldn't have been stewing you couldn't have been stewing he couldn't have been stewing we couldn't have been stewing you couldn't have been stewing they couldn't have been stewing

Interrogative form

Simple form	V-ing form
could I stew? could you stew? could he stew? could we stew? could you stew? could they stew?	could I be stewing? could you be stewing? could he be stewing? could we be stewing? could you be stewing? could they be stewing?
Perfect	V-ing perfect
could I have stewed? could you have stewed? could he have stewed? could we have stewed? could you have stewed? could they have stewed?	could I have been stewing? could you have been stewing? could he have been stewing? could we have been stewing? could you have been stewing? could they have been stewing?

Interro-negative form

Simple form	V-ing form
couldn't I stew? couldn't you stew? couldn't he stew? couldn't we stew? couldn't you stew? couldn't they stew?	couldn't I be stewing? couldn't you be stewing? couldn't he be stewing? couldn't we be stewing? couldn't you be stewing? couldn't they be stewing?
Perfect	V-ing perfect
couldn't I have stewed? couldn't you have stewed? couldn't he have stewed? couldn't we have stewed? couldn't you have stewed? couldn't they have stewed?	couldn't I have been stewing? couldn't you have been stewing? couldn't he have been stewing? couldn't we have been stewing? couldn't you have been stewing? couldn't they have been stewing?