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