English verb conjugation
MUST SPRING-CLEAN

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

Affirmation

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

Negation

Simple form	V-ing form
I must not spring-clean you must not spring-clean he must not spring-clean we must not spring-clean you must not spring-clean they must not spring-clean	I must not be spring-cleaning you must not be spring-cleaning he must not be spring-cleaning we must not be spring-cleaning you must not be spring-cleaning they must not be spring-cleaning
Perfect	V-ing perfect
I must not have spring-cleaned you must not have spring-cleaned he must not have spring-cleaned we must not have spring-cleaned you must not have spring-cleaned they must not have spring-cleaned	I must not have been spring-cleaning you must not have been spring-cleaning he must not have been spring-cleaning we must not have been spring-cleaning you must not have been spring-cleaning they must not have been spring-cleaning

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not spring-clean? must you not spring-clean? must he not spring-clean? must we not spring-clean? must you not spring-clean? must they not spring-clean?	must I not be spring-cleaning? must you not be spring-cleaning? must he not be spring-cleaning? must we not be spring-cleaning? must you not be spring-cleaning? must they not be spring-cleaning?
Perfect	V-ing perfect
must I not have spring-cleaned? must you not have spring-cleaned? must he not have spring-cleaned? must we not have spring-cleaned? must you not have spring-cleaned? must they not have spring-cleaned?	must I not have been spring-cleaning? must you not have been spring-cleaning? must he not have been spring-cleaning? must we not have been spring-cleaning? must you not have been spring-cleaning? must they not have been spring-cleaning?