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