must decollate
Regular verb: decollate - decollated- decollated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must decollate
you must decollate
she must decollate
we must decollate
you must decollate
they must decollate 	I must be decollating
you must be decollating
she must be decollating
we must be decollating
you must be decollating
they must be decollating	I must have decollated
you must have decollated
she 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
she 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 must not decollate
you must not decollate
she must not decollate
we must not decollate
you must not decollate
they must not decollate 	I must not be decollating
you must not be decollating
she must not be decollating
we must not be decollating
you must not be decollating
they must not be decollating	I must not have decollated
you must not have decollated
she must not have decollated
we must not have decollated
you must not have decollated
they must not have decollated	I must not have been decollating
you must not have been decollating
she must not have been decollating
we must not have been decollating
you must not have been decollating
they must not have been decollating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I decollate?
must you decollate?
must she decollate?
must we decollate?
must you decollate?
must they decollate? 	must I be decollating?
must you be decollating?
must she be decollating?
must we be decollating?
must you be decollating?
must they be decollating? 	must I have decollated?
must you have decollated?
must she 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 she 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 	
must I not decollate?
must you not decollate?
must she not decollate?
must we not decollate?
must you not decollate?
must they not decollate? 	must I not be decollating?
must you not be decollating?
must she not be decollating?
must we not be decollating?
must you not be decollating?
must they not be decollating? 	must I not have decollated?
must you not have decollated?
must she not have decollated?
must we not have decollated?
must you not have decollated?
must they not have decollated? 	must I not have been decollating?
must you not have been decollating?
must she not have been decollating?
must we not have been decollating?
must you not have been decollating?
must they not have been decollating?