must syncopate
Regular verb: syncopate - syncopated- syncopated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must syncopate
you must syncopate
he must syncopate
we must syncopate
you must syncopate
they must syncopate 	I must be syncopating
you must be syncopating
he must be syncopating
we must be syncopating
you must be syncopating
they must be syncopating	I must have syncopated
you must have syncopated
he must have syncopated
we must have syncopated
you must have syncopated
they must have syncopated	I must have been syncopating
you must have been syncopating
he must have been syncopating
we must have been syncopating
you must have been syncopating
they must have been syncopating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't syncopate
you mustn't syncopate
he mustn't syncopate
we mustn't syncopate
you mustn't syncopate
they mustn't syncopate 	I mustn't be syncopating
you mustn't be syncopating
he mustn't be syncopating
we mustn't be syncopating
you mustn't be syncopating
they mustn't be syncopating	I mustn't have syncopated
you mustn't have syncopated
he mustn't have syncopated
we mustn't have syncopated
you mustn't have syncopated
they mustn't have syncopated	I mustn't have been syncopating
you mustn't have been syncopating
he mustn't have been syncopating
we mustn't have been syncopating
you mustn't have been syncopating
they mustn't have been syncopating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I syncopate?
must you syncopate?
must he syncopate?
must we syncopate?
must you syncopate?
must they syncopate? 	must I be syncopating?
must you be syncopating?
must he be syncopating?
must we be syncopating?
must you be syncopating?
must they be syncopating? 	must I have syncopated?
must you have syncopated?
must he have syncopated?
must we have syncopated?
must you have syncopated?
must they have syncopated? 	must I have been syncopating?
must you have been syncopating?
must he have been syncopating?
must we have been syncopating?
must you have been syncopating?
must they have been syncopating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I syncopate?
mustn't you syncopate?
mustn't he syncopate?
mustn't we syncopate?
mustn't you syncopate?
mustn't they syncopate? 	mustn't I be syncopating?
mustn't you be syncopating?
mustn't he be syncopating?
mustn't we be syncopating?
mustn't you be syncopating?
mustn't they be syncopating? 	mustn't I have syncopated?
mustn't you have syncopated?
mustn't he have syncopated?
mustn't we have syncopated?
mustn't you have syncopated?
mustn't they have syncopated? 	mustn't I have been syncopating?
mustn't you have been syncopating?
mustn't he have been syncopating?
mustn't we have been syncopating?
mustn't you have been syncopating?
mustn't they have been syncopating?