I'd be costing you'd be costing she'd be costing we'd be costing you'd be costing they'd be costing
Perfect
I would've cost you would've cost she 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 she 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 she 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 she 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 she 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 she 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 she cost? would we cost? would you cost? would they cost?
V-ing form
would I be costing? would you be costing? would she be costing? would we be costing? would you be costing? would they be costing?
Perfect
would I have cost? would you have cost? would she 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 she 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 she 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 she 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 she 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 she have been costing? wouldn't we have been costing? wouldn't you have been costing? wouldn't they have been costing?