must metastasize
Regular verb: metastasize - metastasized- metastasized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must metastasize
you must metastasize
he must metastasize
we must metastasize
you must metastasize
they must metastasize 	I must be metastasizing
you must be metastasizing
he must be metastasizing
we must be metastasizing
you must be metastasizing
they must be metastasizing	I must have metastasized
you must have metastasized
he must have metastasized
we must have metastasized
you must have metastasized
they must have metastasized	I must have been metastasizing
you must have been metastasizing
he must have been metastasizing
we must have been metastasizing
you must have been metastasizing
they must have been metastasizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't metastasize
you mustn't metastasize
he mustn't metastasize
we mustn't metastasize
you mustn't metastasize
they mustn't metastasize 	I mustn't be metastasizing
you mustn't be metastasizing
he mustn't be metastasizing
we mustn't be metastasizing
you mustn't be metastasizing
they mustn't be metastasizing	I mustn't have metastasized
you mustn't have metastasized
he mustn't have metastasized
we mustn't have metastasized
you mustn't have metastasized
they mustn't have metastasized	I mustn't have been metastasizing
you mustn't have been metastasizing
he mustn't have been metastasizing
we mustn't have been metastasizing
you mustn't have been metastasizing
they mustn't have been metastasizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I metastasize?
must you metastasize?
must he metastasize?
must we metastasize?
must you metastasize?
must they metastasize? 	must I be metastasizing?
must you be metastasizing?
must he be metastasizing?
must we be metastasizing?
must you be metastasizing?
must they be metastasizing? 	must I have metastasized?
must you have metastasized?
must he have metastasized?
must we have metastasized?
must you have metastasized?
must they have metastasized? 	must I have been metastasizing?
must you have been metastasizing?
must he have been metastasizing?
must we have been metastasizing?
must you have been metastasizing?
must they have been metastasizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I metastasize?
mustn't you metastasize?
mustn't he metastasize?
mustn't we metastasize?
mustn't you metastasize?
mustn't they metastasize? 	mustn't I be metastasizing?
mustn't you be metastasizing?
mustn't he be metastasizing?
mustn't we be metastasizing?
mustn't you be metastasizing?
mustn't they be metastasizing? 	mustn't I have metastasized?
mustn't you have metastasized?
mustn't he have metastasized?
mustn't we have metastasized?
mustn't you have metastasized?
mustn't they have metastasized? 	mustn't I have been metastasizing?
mustn't you have been metastasizing?
mustn't he have been metastasizing?
mustn't we have been metastasizing?
mustn't you have been metastasizing?
mustn't they have been metastasizing?