English verb conjugation
COULD LONG

Regular verb: long - longed - longed

Affirmation

Simple form	V-ing form
I could long you could long she could long we could long you could long they could long	I could be longing you could be longing she could be longing we could be longing you could be longing they could be longing
Perfect	V-ing perfect
I could have longed you could have longed she could have longed we could have longed you could have longed they could have longed	I could have been longing you could have been longing she could have been longing we could have been longing you could have been longing they could have been longing

Negation

Simple form	V-ing form
I could not long you could not long she could not long we could not long you could not long they could not long	I could not be longing you could not be longing she could not be longing we could not be longing you could not be longing they could not be longing
Perfect	V-ing perfect
I could not have longed you could not have longed she could not have longed we could not have longed you could not have longed they could not have longed	I could not have been longing you could not have been longing she could not have been longing we could not have been longing you could not have been longing they could not have been longing

Interrogative form

Simple form	V-ing form
could I long? could you long? could she long? could we long? could you long? could they long?	could I be longing? could you be longing? could she be longing? could we be longing? could you be longing? could they be longing?
Perfect	V-ing perfect
could I have longed? could you have longed? could she have longed? could we have longed? could you have longed? could they have longed?	could I have been longing? could you have been longing? could she have been longing? could we have been longing? could you have been longing? could they have been longing?

Interro-negative form

Simple form	V-ing form
could I not long? could you not long? could she not long? could we not long? could you not long? could they not long?	could I not be longing? could you not be longing? could she not be longing? could we not be longing? could you not be longing? could they not be longing?
Perfect	V-ing perfect
could I not have longed? could you not have longed? could she not have longed? could we not have longed? could you not have longed? could they not have longed?	could I not have been longing? could you not have been longing? could she not have been longing? could we not have been longing? could you not have been longing? could they not have been longing?