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 couldn't dowel you couldn't dowel he couldn't dowel we couldn't dowel you couldn't dowel they couldn't dowel	I couldn't be dowelling you couldn't be dowelling he couldn't be dowelling we couldn't be dowelling you couldn't be dowelling they couldn't be dowelling
Perfect	V-ing perfect
I couldn't have dowelled you couldn't have dowelled he couldn't have dowelled we couldn't have dowelled you couldn't have dowelled they couldn't have dowelled	I couldn't have been dowelling you couldn't have been dowelling he couldn't have been dowelling we couldn't have been dowelling you couldn't have been dowelling they couldn't 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
couldn't I dowel? couldn't you dowel? couldn't he dowel? couldn't we dowel? couldn't you dowel? couldn't they dowel?	couldn't I be dowelling? couldn't you be dowelling? couldn't he be dowelling? couldn't we be dowelling? couldn't you be dowelling? couldn't they be dowelling?
Perfect	V-ing perfect
couldn't I have dowelled? couldn't you have dowelled? couldn't he have dowelled? couldn't we have dowelled? couldn't you have dowelled? couldn't they have dowelled?	couldn't I have been dowelling? couldn't you have been dowelling? couldn't he have been dowelling? couldn't we have been dowelling? couldn't you have been dowelling? couldn't they have been dowelling?