must suspect
Regular verb: suspect - suspected- suspected

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must suspect
you must suspect
he must suspect
we must suspect
you must suspect
they must suspect 	I must be suspecting
you must be suspecting
he must be suspecting
we must be suspecting
you must be suspecting
they must be suspecting	I must have suspected
you must have suspected
he must have suspected
we must have suspected
you must have suspected
they must have suspected	I must have been suspecting
you must have been suspecting
he must have been suspecting
we must have been suspecting
you must have been suspecting
they must have been suspecting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't suspect
you mustn't suspect
he mustn't suspect
we mustn't suspect
you mustn't suspect
they mustn't suspect 	I mustn't be suspecting
you mustn't be suspecting
he mustn't be suspecting
we mustn't be suspecting
you mustn't be suspecting
they mustn't be suspecting	I mustn't have suspected
you mustn't have suspected
he mustn't have suspected
we mustn't have suspected
you mustn't have suspected
they mustn't have suspected	I mustn't have been suspecting
you mustn't have been suspecting
he mustn't have been suspecting
we mustn't have been suspecting
you mustn't have been suspecting
they mustn't have been suspecting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I suspect?
must you suspect?
must he suspect?
must we suspect?
must you suspect?
must they suspect? 	must I be suspecting?
must you be suspecting?
must he be suspecting?
must we be suspecting?
must you be suspecting?
must they be suspecting? 	must I have suspected?
must you have suspected?
must he have suspected?
must we have suspected?
must you have suspected?
must they have suspected? 	must I have been suspecting?
must you have been suspecting?
must he have been suspecting?
must we have been suspecting?
must you have been suspecting?
must they have been suspecting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I suspect?
mustn't you suspect?
mustn't he suspect?
mustn't we suspect?
mustn't you suspect?
mustn't they suspect? 	mustn't I be suspecting?
mustn't you be suspecting?
mustn't he be suspecting?
mustn't we be suspecting?
mustn't you be suspecting?
mustn't they be suspecting? 	mustn't I have suspected?
mustn't you have suspected?
mustn't he have suspected?
mustn't we have suspected?
mustn't you have suspected?
mustn't they have suspected? 	mustn't I have been suspecting?
mustn't you have been suspecting?
mustn't he have been suspecting?
mustn't we have been suspecting?
mustn't you have been suspecting?
mustn't they have been suspecting?