I might stack you might stack she might stack we might stack you might stack they might stack
V-ing form
I might be stacking you might be stacking she might be stacking we might be stacking you might be stacking they might be stacking
Perfect
I might have stacked you might have stacked she might have stacked we might have stacked you might have stacked they might have stacked
V-ing perfect
I might have been stacking you might have been stacking she might have been stacking we might have been stacking you might have been stacking they might have been stacking
Negation
Simple form
I mightn't stack you mightn't stack she mightn't stack we mightn't stack you mightn't stack they mightn't stack
V-ing form
I mightn't be stacking you mightn't be stacking she mightn't be stacking we mightn't be stacking you mightn't be stacking they mightn't be stacking
Perfect
I mightn't have stacked you mightn't have stacked she mightn't have stacked we mightn't have stacked you mightn't have stacked they mightn't have stacked
V-ing perfect
I mightn't have been stacking you mightn't have been stacking she mightn't have been stacking we mightn't have been stacking you mightn't have been stacking they mightn't have been stacking
Interrogative form
Simple form
might I stack? might you stack? might she stack? might we stack? might you stack? might they stack?
V-ing form
might I be stacking? might you be stacking? might she be stacking? might we be stacking? might you be stacking? might they be stacking?
Perfect
might I have stacked? might you have stacked? might she have stacked? might we have stacked? might you have stacked? might they have stacked?
V-ing perfect
might I have been stacking? might you have been stacking? might she have been stacking? might we have been stacking? might you have been stacking? might they have been stacking?
Interro-negative form
Simple form
mightn't I stack? mightn't you stack? mightn't she stack? mightn't we stack? mightn't you stack? mightn't they stack?
V-ing form
mightn't I be stacking? mightn't you be stacking? mightn't she be stacking? mightn't we be stacking? mightn't you be stacking? mightn't they be stacking?
Perfect
mightn't I have stacked? mightn't you have stacked? mightn't she have stacked? mightn't we have stacked? mightn't you have stacked? mightn't they have stacked?
V-ing perfect
mightn't I have been stacking? mightn't you have been stacking? mightn't she have been stacking? mightn't we have been stacking? mightn't you have been stacking? mightn't they have been stacking?