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 mustn't spring-clean you mustn't spring-clean he mustn't spring-clean we mustn't spring-clean you mustn't spring-clean they mustn't spring-clean	I mustn't be spring-cleaning you mustn't be spring-cleaning he mustn't be spring-cleaning we mustn't be spring-cleaning you mustn't be spring-cleaning they mustn't be spring-cleaning
Perfect	V-ing perfect
I mustn't have spring-cleaned you mustn't have spring-cleaned he mustn't have spring-cleaned we mustn't have spring-cleaned you mustn't have spring-cleaned they mustn't have spring-cleaned	I mustn't have been spring-cleaning you mustn't have been spring-cleaning he mustn't have been spring-cleaning we mustn't have been spring-cleaning you mustn't have been spring-cleaning they mustn't 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
mustn't I spring-clean? mustn't you spring-clean? mustn't he spring-clean? mustn't we spring-clean? mustn't you spring-clean? mustn't they spring-clean?	mustn't I be spring-cleaning? mustn't you be spring-cleaning? mustn't he be spring-cleaning? mustn't we be spring-cleaning? mustn't you be spring-cleaning? mustn't they be spring-cleaning?
Perfect	V-ing perfect
mustn't I have spring-cleaned? mustn't you have spring-cleaned? mustn't he have spring-cleaned? mustn't we have spring-cleaned? mustn't you have spring-cleaned? mustn't they have spring-cleaned?	mustn't I have been spring-cleaning? mustn't you have been spring-cleaning? mustn't he have been spring-cleaning? mustn't we have been spring-cleaning? mustn't you have been spring-cleaning? mustn't they have been spring-cleaning?