must desecrate
Regular verb: desecrate - desecrated- desecrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must desecrate
you must desecrate
he must desecrate
we must desecrate
you must desecrate
they must desecrate 	I must be desecrating
you must be desecrating
he must be desecrating
we must be desecrating
you must be desecrating
they must be desecrating	I must have desecrated
you must have desecrated
he must have desecrated
we must have desecrated
you must have desecrated
they must have desecrated	I must have been desecrating
you must have been desecrating
he must have been desecrating
we must have been desecrating
you must have been desecrating
they must have been desecrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't desecrate
you mustn't desecrate
he mustn't desecrate
we mustn't desecrate
you mustn't desecrate
they mustn't desecrate 	I mustn't be desecrating
you mustn't be desecrating
he mustn't be desecrating
we mustn't be desecrating
you mustn't be desecrating
they mustn't be desecrating	I mustn't have desecrated
you mustn't have desecrated
he mustn't have desecrated
we mustn't have desecrated
you mustn't have desecrated
they mustn't have desecrated	I mustn't have been desecrating
you mustn't have been desecrating
he mustn't have been desecrating
we mustn't have been desecrating
you mustn't have been desecrating
they mustn't have been desecrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I desecrate?
must you desecrate?
must he desecrate?
must we desecrate?
must you desecrate?
must they desecrate? 	must I be desecrating?
must you be desecrating?
must he be desecrating?
must we be desecrating?
must you be desecrating?
must they be desecrating? 	must I have desecrated?
must you have desecrated?
must he have desecrated?
must we have desecrated?
must you have desecrated?
must they have desecrated? 	must I have been desecrating?
must you have been desecrating?
must he have been desecrating?
must we have been desecrating?
must you have been desecrating?
must they have been desecrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I desecrate?
mustn't you desecrate?
mustn't he desecrate?
mustn't we desecrate?
mustn't you desecrate?
mustn't they desecrate? 	mustn't I be desecrating?
mustn't you be desecrating?
mustn't he be desecrating?
mustn't we be desecrating?
mustn't you be desecrating?
mustn't they be desecrating? 	mustn't I have desecrated?
mustn't you have desecrated?
mustn't he have desecrated?
mustn't we have desecrated?
mustn't you have desecrated?
mustn't they have desecrated? 	mustn't I have been desecrating?
mustn't you have been desecrating?
mustn't he have been desecrating?
mustn't we have been desecrating?
mustn't you have been desecrating?
mustn't they have been desecrating?