might spring-clean
Regular verb: spring-clean - spring-cleaned- spring-cleaned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I might spring-clean
you might spring-clean
he might spring-clean
we might spring-clean
you might spring-clean
they might spring-clean 	I might be spring-cleaning
you might be spring-cleaning
he might be spring-cleaning
we might be spring-cleaning
you might be spring-cleaning
they might be spring-cleaning	I might have spring-cleaned
you might have spring-cleaned
he might have spring-cleaned
we might have spring-cleaned
you might have spring-cleaned
they might have spring-cleaned	I might have been spring-cleaning
you might have been spring-cleaning
he might have been spring-cleaning
we might have been spring-cleaning
you might have been spring-cleaning
they might have been spring-cleaning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mightn't spring-clean
you mightn't spring-clean
he mightn't spring-clean
we mightn't spring-clean
you mightn't spring-clean
they mightn't spring-clean 	I mightn't be spring-cleaning
you mightn't be spring-cleaning
he mightn't be spring-cleaning
we mightn't be spring-cleaning
you mightn't be spring-cleaning
they mightn't be spring-cleaning	I mightn't have spring-cleaned
you mightn't have spring-cleaned
he mightn't have spring-cleaned
we mightn't have spring-cleaned
you mightn't have spring-cleaned
they mightn't have spring-cleaned	I mightn't have been spring-cleaning
you mightn't have been spring-cleaning
he mightn't have been spring-cleaning
we mightn't have been spring-cleaning
you mightn't have been spring-cleaning
they mightn't have been spring-cleaning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
might I spring-clean?
might you spring-clean?
might he spring-clean?
might we spring-clean?
might you spring-clean?
might they spring-clean? 	might I be spring-cleaning?
might you be spring-cleaning?
might he be spring-cleaning?
might we be spring-cleaning?
might you be spring-cleaning?
might they be spring-cleaning? 	might I have spring-cleaned?
might you have spring-cleaned?
might he have spring-cleaned?
might we have spring-cleaned?
might you have spring-cleaned?
might they have spring-cleaned? 	might I have been spring-cleaning?
might you have been spring-cleaning?
might he have been spring-cleaning?
might we have been spring-cleaning?
might you have been spring-cleaning?
might they have been spring-cleaning? 	

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