I might decrease you might decrease he might decrease we might decrease you might decrease they might decrease
V-ing form
I might be decreasing you might be decreasing he might be decreasing we might be decreasing you might be decreasing they might be decreasing
Perfect
I might have decreased you might have decreased he might have decreased we might have decreased you might have decreased they might have decreased
V-ing perfect
I might have been decreasing you might have been decreasing he might have been decreasing we might have been decreasing you might have been decreasing they might have been decreasing
Negation
Simple form
I mightn't decrease you mightn't decrease he mightn't decrease we mightn't decrease you mightn't decrease they mightn't decrease
V-ing form
I mightn't be decreasing you mightn't be decreasing he mightn't be decreasing we mightn't be decreasing you mightn't be decreasing they mightn't be decreasing
Perfect
I mightn't have decreased you mightn't have decreased he mightn't have decreased we mightn't have decreased you mightn't have decreased they mightn't have decreased
V-ing perfect
I mightn't have been decreasing you mightn't have been decreasing he mightn't have been decreasing we mightn't have been decreasing you mightn't have been decreasing they mightn't have been decreasing
Interrogative form
Simple form
might I decrease? might you decrease? might he decrease? might we decrease? might you decrease? might they decrease?
V-ing form
might I be decreasing? might you be decreasing? might he be decreasing? might we be decreasing? might you be decreasing? might they be decreasing?
Perfect
might I have decreased? might you have decreased? might he have decreased? might we have decreased? might you have decreased? might they have decreased?
V-ing perfect
might I have been decreasing? might you have been decreasing? might he have been decreasing? might we have been decreasing? might you have been decreasing? might they have been decreasing?
Interro-negative form
Simple form
mightn't I decrease? mightn't you decrease? mightn't he decrease? mightn't we decrease? mightn't you decrease? mightn't they decrease?
V-ing form
mightn't I be decreasing? mightn't you be decreasing? mightn't he be decreasing? mightn't we be decreasing? mightn't you be decreasing? mightn't they be decreasing?
Perfect
mightn't I have decreased? mightn't you have decreased? mightn't he have decreased? mightn't we have decreased? mightn't you have decreased? mightn't they have decreased?
V-ing perfect
mightn't I have been decreasing? mightn't you have been decreasing? mightn't he have been decreasing? mightn't we have been decreasing? mightn't you have been decreasing? mightn't they have been decreasing?