English verb conjugation
COULD PANEL

Regular verb: panel - panelled - panelled

Affirmation

Simple form	V-ing form
I could panel you could panel he could panel we could panel you could panel they could panel	I could be panelling you could be panelling he could be panelling we could be panelling you could be panelling they could be panelling
Perfect	V-ing perfect
I could have panelled you could have panelled he could have panelled we could have panelled you could have panelled they could have panelled	I could have been panelling you could have been panelling he could have been panelling we could have been panelling you could have been panelling they could have been panelling

Negation

Simple form	V-ing form
I couldn't panel you couldn't panel he couldn't panel we couldn't panel you couldn't panel they couldn't panel	I couldn't be panelling you couldn't be panelling he couldn't be panelling we couldn't be panelling you couldn't be panelling they couldn't be panelling
Perfect	V-ing perfect
I couldn't have panelled you couldn't have panelled he couldn't have panelled we couldn't have panelled you couldn't have panelled they couldn't have panelled	I couldn't have been panelling you couldn't have been panelling he couldn't have been panelling we couldn't have been panelling you couldn't have been panelling they couldn't have been panelling

Interrogative form

Simple form	V-ing form
could I panel? could you panel? could he panel? could we panel? could you panel? could they panel?	could I be panelling? could you be panelling? could he be panelling? could we be panelling? could you be panelling? could they be panelling?
Perfect	V-ing perfect
could I have panelled? could you have panelled? could he have panelled? could we have panelled? could you have panelled? could they have panelled?	could I have been panelling? could you have been panelling? could he have been panelling? could we have been panelling? could you have been panelling? could they have been panelling?

Interro-negative form

Simple form	V-ing form
couldn't I panel? couldn't you panel? couldn't he panel? couldn't we panel? couldn't you panel? couldn't they panel?	couldn't I be panelling? couldn't you be panelling? couldn't he be panelling? couldn't we be panelling? couldn't you be panelling? couldn't they be panelling?
Perfect	V-ing perfect
couldn't I have panelled? couldn't you have panelled? couldn't he have panelled? couldn't we have panelled? couldn't you have panelled? couldn't they have panelled?	couldn't I have been panelling? couldn't you have been panelling? couldn't he have been panelling? couldn't we have been panelling? couldn't you have been panelling? couldn't they have been panelling?