must synchronize
Regular verb: synchronize - synchronized- synchronized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must synchronize
you must synchronize
she must synchronize
we must synchronize
you must synchronize
they must synchronize 	I must be synchronizing
you must be synchronizing
she must be synchronizing
we must be synchronizing
you must be synchronizing
they must be synchronizing	I must have synchronized
you must have synchronized
she must have synchronized
we must have synchronized
you must have synchronized
they must have synchronized	I must have been synchronizing
you must have been synchronizing
she must have been synchronizing
we must have been synchronizing
you must have been synchronizing
they must have been synchronizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't synchronize
you mustn't synchronize
she mustn't synchronize
we mustn't synchronize
you mustn't synchronize
they mustn't synchronize 	I mustn't be synchronizing
you mustn't be synchronizing
she mustn't be synchronizing
we mustn't be synchronizing
you mustn't be synchronizing
they mustn't be synchronizing	I mustn't have synchronized
you mustn't have synchronized
she mustn't have synchronized
we mustn't have synchronized
you mustn't have synchronized
they mustn't have synchronized	I mustn't have been synchronizing
you mustn't have been synchronizing
she mustn't have been synchronizing
we mustn't have been synchronizing
you mustn't have been synchronizing
they mustn't have been synchronizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I synchronize?
must you synchronize?
must she synchronize?
must we synchronize?
must you synchronize?
must they synchronize? 	must I be synchronizing?
must you be synchronizing?
must she be synchronizing?
must we be synchronizing?
must you be synchronizing?
must they be synchronizing? 	must I have synchronized?
must you have synchronized?
must she have synchronized?
must we have synchronized?
must you have synchronized?
must they have synchronized? 	must I have been synchronizing?
must you have been synchronizing?
must she have been synchronizing?
must we have been synchronizing?
must you have been synchronizing?
must they have been synchronizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I synchronize?
mustn't you synchronize?
mustn't she synchronize?
mustn't we synchronize?
mustn't you synchronize?
mustn't they synchronize? 	mustn't I be synchronizing?
mustn't you be synchronizing?
mustn't she be synchronizing?
mustn't we be synchronizing?
mustn't you be synchronizing?
mustn't they be synchronizing? 	mustn't I have synchronized?
mustn't you have synchronized?
mustn't she have synchronized?
mustn't we have synchronized?
mustn't you have synchronized?
mustn't they have synchronized? 	mustn't I have been synchronizing?
mustn't you have been synchronizing?
mustn't she have been synchronizing?
mustn't we have been synchronizing?
mustn't you have been synchronizing?
mustn't they have been synchronizing?