could long
Regular verb: long - longed- longed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could long
you could long
he could long
we could long
you could long
they could long 	I could be longing
you could be longing
he could be longing
we could be longing
you could be longing
they could be longing	I could have longed
you could have longed
he 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
he 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 	Perfect 	V-ing perfect 	
I couldn't long
you couldn't long
he 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
he couldn't be longing
we couldn't be longing
you couldn't be longing
they couldn't be longing	I couldn't have longed
you couldn't have longed
he 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
he 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 	Perfect 	V-ing perfect 	
could I long?
could you long?
could he long?
could we long?
could you long?
could they long? 	could I be longing?
could you be longing?
could he be longing?
could we be longing?
could you be longing?
could they be longing? 	could I have longed?
could you have longed?
could he 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 he 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 	Perfect 	V-ing perfect 	
couldn't I long?
couldn't you long?
couldn't he 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 he be longing?
couldn't we be longing?
couldn't you be longing?
couldn't they be longing? 	couldn't I have longed?
couldn't you have longed?
couldn't he 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 he have been longing?
couldn't we have been longing?
couldn't you have been longing?
couldn't they have been longing?