I'd be costing you'd be costing he'd be costing we'd be costing you'd be costing they'd be costing
Perfect
I would've cost you would've cost he would've cost we would've cost you would've cost they would've cost
V-ing perfect
I would've been costing you would've been costing he would've been costing we would've been costing you would've been costing they would've been costing
Negation
Simple form
I wouldn't cost you wouldn't cost he wouldn't cost we wouldn't cost you wouldn't cost they wouldn't cost
V-ing form
I wouldn't be costing you wouldn't be costing he wouldn't be costing we wouldn't be costing you wouldn't be costing they wouldn't be costing
Perfect
I wouldn't have cost you wouldn't have cost he wouldn't have cost we wouldn't have cost you wouldn't have cost they wouldn't have cost
V-ing perfect
I wouldn't have been costing you wouldn't have been costing he wouldn't have been costing we wouldn't have been costing you wouldn't have been costing they wouldn't have been costing
Interrogative form
Simple form
would I cost? would you cost? would he cost? would we cost? would you cost? would they cost?
V-ing form
would I be costing? would you be costing? would he be costing? would we be costing? would you be costing? would they be costing?
Perfect
would I have cost? would you have cost? would he have cost? would we have cost? would you have cost? would they have cost?
V-ing perfect
would I have been costing? would you have been costing? would he have been costing? would we have been costing? would you have been costing? would they have been costing?
Interro-negative form
Simple form
wouldn't I cost? wouldn't you cost? wouldn't he cost? wouldn't we cost? wouldn't you cost? wouldn't they cost?
V-ing form
wouldn't I be costing? wouldn't you be costing? wouldn't he be costing? wouldn't we be costing? wouldn't you be costing? wouldn't they be costing?
Perfect
wouldn't I have cost? wouldn't you have cost? wouldn't he have cost? wouldn't we have cost? wouldn't you have cost? wouldn't they have cost?
V-ing perfect
wouldn't I have been costing? wouldn't you have been costing? wouldn't he have been costing? wouldn't we have been costing? wouldn't you have been costing? wouldn't they have been costing?