I'd back you'd back she'd back we'd back you'd back they'd back
V-ing form
I'd be backing you'd be backing she'd be backing we'd be backing you'd be backing they'd be backing
Perfect
I would've backed you would've backed she would've backed we would've backed you would've backed they would've backed
V-ing perfect
I would've been backing you would've been backing she would've been backing we would've been backing you would've been backing they would've been backing
Negation
Simple form
I wouldn't back you wouldn't back she wouldn't back we wouldn't back you wouldn't back they wouldn't back
V-ing form
I wouldn't be backing you wouldn't be backing she wouldn't be backing we wouldn't be backing you wouldn't be backing they wouldn't be backing
Perfect
I wouldn't have backed you wouldn't have backed she wouldn't have backed we wouldn't have backed you wouldn't have backed they wouldn't have backed
V-ing perfect
I wouldn't have been backing you wouldn't have been backing she wouldn't have been backing we wouldn't have been backing you wouldn't have been backing they wouldn't have been backing
Interrogative form
Simple form
would I back? would you back? would she back? would we back? would you back? would they back?
V-ing form
would I be backing? would you be backing? would she be backing? would we be backing? would you be backing? would they be backing?
Perfect
would I have backed? would you have backed? would she have backed? would we have backed? would you have backed? would they have backed?
V-ing perfect
would I have been backing? would you have been backing? would she have been backing? would we have been backing? would you have been backing? would they have been backing?
Interro-negative form
Simple form
wouldn't I back? wouldn't you back? wouldn't she back? wouldn't we back? wouldn't you back? wouldn't they back?
V-ing form
wouldn't I be backing? wouldn't you be backing? wouldn't she be backing? wouldn't we be backing? wouldn't you be backing? wouldn't they be backing?
Perfect
wouldn't I have backed? wouldn't you have backed? wouldn't she have backed? wouldn't we have backed? wouldn't you have backed? wouldn't they have backed?
V-ing perfect
wouldn't I have been backing? wouldn't you have been backing? wouldn't she have been backing? wouldn't we have been backing? wouldn't you have been backing? wouldn't they have been backing?