must derange
Regular verb: derange - deranged- deranged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must derange
you must derange
he must derange
we must derange
you must derange
they must derange 	I must be deranging
you must be deranging
he must be deranging
we must be deranging
you must be deranging
they must be deranging	I must have deranged
you must have deranged
he must have deranged
we must have deranged
you must have deranged
they must have deranged	I must have been deranging
you must have been deranging
he must have been deranging
we must have been deranging
you must have been deranging
they must have been deranging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not derange
you must not derange
he must not derange
we must not derange
you must not derange
they must not derange 	I must not be deranging
you must not be deranging
he must not be deranging
we must not be deranging
you must not be deranging
they must not be deranging	I must not have deranged
you must not have deranged
he must not have deranged
we must not have deranged
you must not have deranged
they must not have deranged	I must not have been deranging
you must not have been deranging
he must not have been deranging
we must not have been deranging
you must not have been deranging
they must not have been deranging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I derange?
must you derange?
must he derange?
must we derange?
must you derange?
must they derange? 	must I be deranging?
must you be deranging?
must he be deranging?
must we be deranging?
must you be deranging?
must they be deranging? 	must I have deranged?
must you have deranged?
must he have deranged?
must we have deranged?
must you have deranged?
must they have deranged? 	must I have been deranging?
must you have been deranging?
must he have been deranging?
must we have been deranging?
must you have been deranging?
must they have been deranging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not derange?
must you not derange?
must he not derange?
must we not derange?
must you not derange?
must they not derange? 	must I not be deranging?
must you not be deranging?
must he not be deranging?
must we not be deranging?
must you not be deranging?
must they not be deranging? 	must I not have deranged?
must you not have deranged?
must he not have deranged?
must we not have deranged?
must you not have deranged?
must they not have deranged? 	must I not have been deranging?
must you not have been deranging?
must he not have been deranging?
must we not have been deranging?
must you not have been deranging?
must they not have been deranging?