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 couldn't long you couldn't long she couldn't long we couldn't long you couldn't long they couldn't long	I couldn't be longing you couldn't be longing she couldn't be longing we couldn't be longing you couldn't be longing they couldn't be longing
Perfect	V-ing perfect
I couldn't have longed you couldn't have longed she couldn't have longed we couldn't have longed you couldn't have longed they couldn't have longed	I couldn't have been longing you couldn't have been longing she couldn't have been longing we couldn't have been longing you couldn't have been longing they couldn't 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
couldn't I long? couldn't you long? couldn't she long? couldn't we long? couldn't you long? couldn't they long?	couldn't I be longing? couldn't you be longing? couldn't she be longing? couldn't we be longing? couldn't you be longing? couldn't they be longing?
Perfect	V-ing perfect
couldn't I have longed? couldn't you have longed? couldn't she have longed? couldn't we have longed? couldn't you have longed? couldn't they have longed?	couldn't I have been longing? couldn't you have been longing? couldn't she have been longing? couldn't we have been longing? couldn't you have been longing? couldn't they have been longing?