must decollate
Regular verb: decollate - decollated- decollated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must decollate
you must decollate
he must decollate
we must decollate
you must decollate
they must decollate 	I must be decollating
you must be decollating
he must be decollating
we must be decollating
you must be decollating
they must be decollating	I must have decollated
you must have decollated
he must have decollated
we must have decollated
you must have decollated
they must have decollated	I must have been decollating
you must have been decollating
he must have been decollating
we must have been decollating
you must have been decollating
they must have been decollating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't decollate
you mustn't decollate
he mustn't decollate
we mustn't decollate
you mustn't decollate
they mustn't decollate 	I mustn't be decollating
you mustn't be decollating
he mustn't be decollating
we mustn't be decollating
you mustn't be decollating
they mustn't be decollating	I mustn't have decollated
you mustn't have decollated
he mustn't have decollated
we mustn't have decollated
you mustn't have decollated
they mustn't have decollated	I mustn't have been decollating
you mustn't have been decollating
he mustn't have been decollating
we mustn't have been decollating
you mustn't have been decollating
they mustn't have been decollating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I decollate?
must you decollate?
must he decollate?
must we decollate?
must you decollate?
must they decollate? 	must I be decollating?
must you be decollating?
must he be decollating?
must we be decollating?
must you be decollating?
must they be decollating? 	must I have decollated?
must you have decollated?
must he have decollated?
must we have decollated?
must you have decollated?
must they have decollated? 	must I have been decollating?
must you have been decollating?
must he have been decollating?
must we have been decollating?
must you have been decollating?
must they have been decollating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I decollate?
mustn't you decollate?
mustn't he decollate?
mustn't we decollate?
mustn't you decollate?
mustn't they decollate? 	mustn't I be decollating?
mustn't you be decollating?
mustn't he be decollating?
mustn't we be decollating?
mustn't you be decollating?
mustn't they be decollating? 	mustn't I have decollated?
mustn't you have decollated?
mustn't he have decollated?
mustn't we have decollated?
mustn't you have decollated?
mustn't they have decollated? 	mustn't I have been decollating?
mustn't you have been decollating?
mustn't he have been decollating?
mustn't we have been decollating?
mustn't you have been decollating?
mustn't they have been decollating?