must clue
Regular verb: clue - clued- clued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must clue
you must clue
she must clue
we must clue
you must clue
they must clue 	I must be cluing
you must be cluing
she must be cluing
we must be cluing
you must be cluing
they must be cluing	I must have clued
you must have clued
she must have clued
we must have clued
you must have clued
they must have clued	I must have been cluing
you must have been cluing
she must have been cluing
we must have been cluing
you must have been cluing
they must have been cluing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't clue
you mustn't clue
she mustn't clue
we mustn't clue
you mustn't clue
they mustn't clue 	I mustn't be cluing
you mustn't be cluing
she mustn't be cluing
we mustn't be cluing
you mustn't be cluing
they mustn't be cluing	I mustn't have clued
you mustn't have clued
she mustn't have clued
we mustn't have clued
you mustn't have clued
they mustn't have clued	I mustn't have been cluing
you mustn't have been cluing
she mustn't have been cluing
we mustn't have been cluing
you mustn't have been cluing
they mustn't have been cluing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I clue?
must you clue?
must she clue?
must we clue?
must you clue?
must they clue? 	must I be cluing?
must you be cluing?
must she be cluing?
must we be cluing?
must you be cluing?
must they be cluing? 	must I have clued?
must you have clued?
must she have clued?
must we have clued?
must you have clued?
must they have clued? 	must I have been cluing?
must you have been cluing?
must she have been cluing?
must we have been cluing?
must you have been cluing?
must they have been cluing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I clue?
mustn't you clue?
mustn't she clue?
mustn't we clue?
mustn't you clue?
mustn't they clue? 	mustn't I be cluing?
mustn't you be cluing?
mustn't she be cluing?
mustn't we be cluing?
mustn't you be cluing?
mustn't they be cluing? 	mustn't I have clued?
mustn't you have clued?
mustn't she have clued?
mustn't we have clued?
mustn't you have clued?
mustn't they have clued? 	mustn't I have been cluing?
mustn't you have been cluing?
mustn't she have been cluing?
mustn't we have been cluing?
mustn't you have been cluing?
mustn't they have been cluing?