must prearrange
Regular verb: prearrange - prearranged- prearranged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prearrange
you must prearrange
he must prearrange
we must prearrange
you must prearrange
they must prearrange 	I must be prearranging
you must be prearranging
he must be prearranging
we must be prearranging
you must be prearranging
they must be prearranging	I must have prearranged
you must have prearranged
he must have prearranged
we must have prearranged
you must have prearranged
they must have prearranged	I must have been prearranging
you must have been prearranging
he must have been prearranging
we must have been prearranging
you must have been prearranging
they must have been prearranging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not prearrange
you must not prearrange
he must not prearrange
we must not prearrange
you must not prearrange
they must not prearrange 	I must not be prearranging
you must not be prearranging
he must not be prearranging
we must not be prearranging
you must not be prearranging
they must not be prearranging	I must not have prearranged
you must not have prearranged
he must not have prearranged
we must not have prearranged
you must not have prearranged
they must not have prearranged	I must not have been prearranging
you must not have been prearranging
he must not have been prearranging
we must not have been prearranging
you must not have been prearranging
they must not have been prearranging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prearrange?
must you prearrange?
must he prearrange?
must we prearrange?
must you prearrange?
must they prearrange? 	must I be prearranging?
must you be prearranging?
must he be prearranging?
must we be prearranging?
must you be prearranging?
must they be prearranging? 	must I have prearranged?
must you have prearranged?
must he have prearranged?
must we have prearranged?
must you have prearranged?
must they have prearranged? 	must I have been prearranging?
must you have been prearranging?
must he have been prearranging?
must we have been prearranging?
must you have been prearranging?
must they have been prearranging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not prearrange?
must you not prearrange?
must he not prearrange?
must we not prearrange?
must you not prearrange?
must they not prearrange? 	must I not be prearranging?
must you not be prearranging?
must he not be prearranging?
must we not be prearranging?
must you not be prearranging?
must they not be prearranging? 	must I not have prearranged?
must you not have prearranged?
must he not have prearranged?
must we not have prearranged?
must you not have prearranged?
must they not have prearranged? 	must I not have been prearranging?
must you not have been prearranging?
must he not have been prearranging?
must we not have been prearranging?
must you not have been prearranging?
must they not have been prearranging?