must cinch
Regular verb: cinch - cinched- cinched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cinch
you must cinch
she must cinch
we must cinch
you must cinch
they must cinch 	I must be cinching
you must be cinching
she must be cinching
we must be cinching
you must be cinching
they must be cinching	I must have cinched
you must have cinched
she must have cinched
we must have cinched
you must have cinched
they must have cinched	I must have been cinching
you must have been cinching
she must have been cinching
we must have been cinching
you must have been cinching
they must have been cinching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't cinch
you mustn't cinch
she mustn't cinch
we mustn't cinch
you mustn't cinch
they mustn't cinch 	I mustn't be cinching
you mustn't be cinching
she mustn't be cinching
we mustn't be cinching
you mustn't be cinching
they mustn't be cinching	I mustn't have cinched
you mustn't have cinched
she mustn't have cinched
we mustn't have cinched
you mustn't have cinched
they mustn't have cinched	I mustn't have been cinching
you mustn't have been cinching
she mustn't have been cinching
we mustn't have been cinching
you mustn't have been cinching
they mustn't have been cinching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cinch?
must you cinch?
must she cinch?
must we cinch?
must you cinch?
must they cinch? 	must I be cinching?
must you be cinching?
must she be cinching?
must we be cinching?
must you be cinching?
must they be cinching? 	must I have cinched?
must you have cinched?
must she have cinched?
must we have cinched?
must you have cinched?
must they have cinched? 	must I have been cinching?
must you have been cinching?
must she have been cinching?
must we have been cinching?
must you have been cinching?
must they have been cinching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I cinch?
mustn't you cinch?
mustn't she cinch?
mustn't we cinch?
mustn't you cinch?
mustn't they cinch? 	mustn't I be cinching?
mustn't you be cinching?
mustn't she be cinching?
mustn't we be cinching?
mustn't you be cinching?
mustn't they be cinching? 	mustn't I have cinched?
mustn't you have cinched?
mustn't she have cinched?
mustn't we have cinched?
mustn't you have cinched?
mustn't they have cinched? 	mustn't I have been cinching?
mustn't you have been cinching?
mustn't she have been cinching?
mustn't we have been cinching?
mustn't you have been cinching?
mustn't they have been cinching?