must effuse
Regular verb: effuse - effused- effused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must effuse
you must effuse
she must effuse
we must effuse
you must effuse
they must effuse 	I must be effusing
you must be effusing
she must be effusing
we must be effusing
you must be effusing
they must be effusing	I must have effused
you must have effused
she must have effused
we must have effused
you must have effused
they must have effused	I must have been effusing
you must have been effusing
she must have been effusing
we must have been effusing
you must have been effusing
they must have been effusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't effuse
you mustn't effuse
she mustn't effuse
we mustn't effuse
you mustn't effuse
they mustn't effuse 	I mustn't be effusing
you mustn't be effusing
she mustn't be effusing
we mustn't be effusing
you mustn't be effusing
they mustn't be effusing	I mustn't have effused
you mustn't have effused
she mustn't have effused
we mustn't have effused
you mustn't have effused
they mustn't have effused	I mustn't have been effusing
you mustn't have been effusing
she mustn't have been effusing
we mustn't have been effusing
you mustn't have been effusing
they mustn't have been effusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I effuse?
must you effuse?
must she effuse?
must we effuse?
must you effuse?
must they effuse? 	must I be effusing?
must you be effusing?
must she be effusing?
must we be effusing?
must you be effusing?
must they be effusing? 	must I have effused?
must you have effused?
must she have effused?
must we have effused?
must you have effused?
must they have effused? 	must I have been effusing?
must you have been effusing?
must she have been effusing?
must we have been effusing?
must you have been effusing?
must they have been effusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I effuse?
mustn't you effuse?
mustn't she effuse?
mustn't we effuse?
mustn't you effuse?
mustn't they effuse? 	mustn't I be effusing?
mustn't you be effusing?
mustn't she be effusing?
mustn't we be effusing?
mustn't you be effusing?
mustn't they be effusing? 	mustn't I have effused?
mustn't you have effused?
mustn't she have effused?
mustn't we have effused?
mustn't you have effused?
mustn't they have effused? 	mustn't I have been effusing?
mustn't you have been effusing?
mustn't she have been effusing?
mustn't we have been effusing?
mustn't you have been effusing?
mustn't they have been effusing?