English verb conjugation
COULD LIBEL

Regular verb: libel - libelled - libelled

Affirmation

Simple form	V-ing form
I could libel you could libel he could libel we could libel you could libel they could libel	I could be libelling you could be libelling he could be libelling we could be libelling you could be libelling they could be libelling
Perfect	V-ing perfect
I could have libelled you could have libelled he could have libelled we could have libelled you could have libelled they could have libelled	I could have been libelling you could have been libelling he could have been libelling we could have been libelling you could have been libelling they could have been libelling

Negation

Simple form	V-ing form
I couldn't libel you couldn't libel he couldn't libel we couldn't libel you couldn't libel they couldn't libel	I couldn't be libelling you couldn't be libelling he couldn't be libelling we couldn't be libelling you couldn't be libelling they couldn't be libelling
Perfect	V-ing perfect
I couldn't have libelled you couldn't have libelled he couldn't have libelled we couldn't have libelled you couldn't have libelled they couldn't have libelled	I couldn't have been libelling you couldn't have been libelling he couldn't have been libelling we couldn't have been libelling you couldn't have been libelling they couldn't have been libelling

Interrogative form

Simple form	V-ing form
could I libel? could you libel? could he libel? could we libel? could you libel? could they libel?	could I be libelling? could you be libelling? could he be libelling? could we be libelling? could you be libelling? could they be libelling?
Perfect	V-ing perfect
could I have libelled? could you have libelled? could he have libelled? could we have libelled? could you have libelled? could they have libelled?	could I have been libelling? could you have been libelling? could he have been libelling? could we have been libelling? could you have been libelling? could they have been libelling?

Interro-negative form

Simple form	V-ing form
couldn't I libel? couldn't you libel? couldn't he libel? couldn't we libel? couldn't you libel? couldn't they libel?	couldn't I be libelling? couldn't you be libelling? couldn't he be libelling? couldn't we be libelling? couldn't you be libelling? couldn't they be libelling?
Perfect	V-ing perfect
couldn't I have libelled? couldn't you have libelled? couldn't he have libelled? couldn't we have libelled? couldn't you have libelled? couldn't they have libelled?	couldn't I have been libelling? couldn't you have been libelling? couldn't he have been libelling? couldn't we have been libelling? couldn't you have been libelling? couldn't they have been libelling?