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