English verb conjugation
COULD DOWEL

Regular verb: dowel - dowelled - dowelled

Affirmation

Simple form	V-ing form
I could dowel you could dowel he could dowel we could dowel you could dowel they could dowel	I could be dowelling you could be dowelling he could be dowelling we could be dowelling you could be dowelling they could be dowelling
Perfect	V-ing perfect
I could have dowelled you could have dowelled he could have dowelled we could have dowelled you could have dowelled they could have dowelled	I could have been dowelling you could have been dowelling he could have been dowelling we could have been dowelling you could have been dowelling they could have been dowelling

Negation

Simple form	V-ing form
I could not dowel you could not dowel he could not dowel we could not dowel you could not dowel they could not dowel	I could not be dowelling you could not be dowelling he could not be dowelling we could not be dowelling you could not be dowelling they could not be dowelling
Perfect	V-ing perfect
I could not have dowelled you could not have dowelled he could not have dowelled we could not have dowelled you could not have dowelled they could not have dowelled	I could not have been dowelling you could not have been dowelling he could not have been dowelling we could not have been dowelling you could not have been dowelling they could not have been dowelling

Interrogative form

Simple form	V-ing form
could I dowel? could you dowel? could he dowel? could we dowel? could you dowel? could they dowel?	could I be dowelling? could you be dowelling? could he be dowelling? could we be dowelling? could you be dowelling? could they be dowelling?
Perfect	V-ing perfect
could I have dowelled? could you have dowelled? could he have dowelled? could we have dowelled? could you have dowelled? could they have dowelled?	could I have been dowelling? could you have been dowelling? could he have been dowelling? could we have been dowelling? could you have been dowelling? could they have been dowelling?

Interro-negative form

Simple form	V-ing form
could I not dowel? could you not dowel? could he not dowel? could we not dowel? could you not dowel? could they not dowel?	could I not be dowelling? could you not be dowelling? could he not be dowelling? could we not be dowelling? could you not be dowelling? could they not be dowelling?
Perfect	V-ing perfect
could I not have dowelled? could you not have dowelled? could he not have dowelled? could we not have dowelled? could you not have dowelled? could they not have dowelled?	could I not have been dowelling? could you not have been dowelling? could he not have been dowelling? could we not have been dowelling? could you not have been dowelling? could they not have been dowelling?