English verb conjugation
COULD LIBEL

Regular verb: libel - libelled - libelled

Affirmation

Simple form	V-ing form
I could libel you could libel she could libel we could libel you could libel they could libel	I could be libelling you could be libelling she 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 she 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 she 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 she 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 she 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 she 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 she 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 she libel? could we libel? could you libel? could they libel?	could I be libelling? could you be libelling? could she 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 she 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 she 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 she 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 she 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 she 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 she have been libelling? couldn't we have been libelling? couldn't you have been libelling? couldn't they have been libelling?