must vivisect
Regular verb: vivisect - vivisected- vivisected

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must vivisect
you must vivisect
she must vivisect
we must vivisect
you must vivisect
they must vivisect 	I must be vivisecting
you must be vivisecting
she must be vivisecting
we must be vivisecting
you must be vivisecting
they must be vivisecting	I must have vivisected
you must have vivisected
she must have vivisected
we must have vivisected
you must have vivisected
they must have vivisected	I must have been vivisecting
you must have been vivisecting
she must have been vivisecting
we must have been vivisecting
you must have been vivisecting
they must have been vivisecting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't vivisect
you mustn't vivisect
she mustn't vivisect
we mustn't vivisect
you mustn't vivisect
they mustn't vivisect 	I mustn't be vivisecting
you mustn't be vivisecting
she mustn't be vivisecting
we mustn't be vivisecting
you mustn't be vivisecting
they mustn't be vivisecting	I mustn't have vivisected
you mustn't have vivisected
she mustn't have vivisected
we mustn't have vivisected
you mustn't have vivisected
they mustn't have vivisected	I mustn't have been vivisecting
you mustn't have been vivisecting
she mustn't have been vivisecting
we mustn't have been vivisecting
you mustn't have been vivisecting
they mustn't have been vivisecting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I vivisect?
must you vivisect?
must she vivisect?
must we vivisect?
must you vivisect?
must they vivisect? 	must I be vivisecting?
must you be vivisecting?
must she be vivisecting?
must we be vivisecting?
must you be vivisecting?
must they be vivisecting? 	must I have vivisected?
must you have vivisected?
must she have vivisected?
must we have vivisected?
must you have vivisected?
must they have vivisected? 	must I have been vivisecting?
must you have been vivisecting?
must she have been vivisecting?
must we have been vivisecting?
must you have been vivisecting?
must they have been vivisecting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I vivisect?
mustn't you vivisect?
mustn't she vivisect?
mustn't we vivisect?
mustn't you vivisect?
mustn't they vivisect? 	mustn't I be vivisecting?
mustn't you be vivisecting?
mustn't she be vivisecting?
mustn't we be vivisecting?
mustn't you be vivisecting?
mustn't they be vivisecting? 	mustn't I have vivisected?
mustn't you have vivisected?
mustn't she have vivisected?
mustn't we have vivisected?
mustn't you have vivisected?
mustn't they have vivisected? 	mustn't I have been vivisecting?
mustn't you have been vivisecting?
mustn't she have been vivisecting?
mustn't we have been vivisecting?
mustn't you have been vivisecting?
mustn't they have been vivisecting?