must subculture
Regular verb: subculture - subcultured- subcultured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must subculture
you must subculture
he must subculture
we must subculture
you must subculture
they must subculture 	I must be subculturing
you must be subculturing
he must be subculturing
we must be subculturing
you must be subculturing
they must be subculturing	I must have subcultured
you must have subcultured
he must have subcultured
we must have subcultured
you must have subcultured
they must have subcultured	I must have been subculturing
you must have been subculturing
he must have been subculturing
we must have been subculturing
you must have been subculturing
they must have been subculturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't subculture
you mustn't subculture
he mustn't subculture
we mustn't subculture
you mustn't subculture
they mustn't subculture 	I mustn't be subculturing
you mustn't be subculturing
he mustn't be subculturing
we mustn't be subculturing
you mustn't be subculturing
they mustn't be subculturing	I mustn't have subcultured
you mustn't have subcultured
he mustn't have subcultured
we mustn't have subcultured
you mustn't have subcultured
they mustn't have subcultured	I mustn't have been subculturing
you mustn't have been subculturing
he mustn't have been subculturing
we mustn't have been subculturing
you mustn't have been subculturing
they mustn't have been subculturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I subculture?
must you subculture?
must he subculture?
must we subculture?
must you subculture?
must they subculture? 	must I be subculturing?
must you be subculturing?
must he be subculturing?
must we be subculturing?
must you be subculturing?
must they be subculturing? 	must I have subcultured?
must you have subcultured?
must he have subcultured?
must we have subcultured?
must you have subcultured?
must they have subcultured? 	must I have been subculturing?
must you have been subculturing?
must he have been subculturing?
must we have been subculturing?
must you have been subculturing?
must they have been subculturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I subculture?
mustn't you subculture?
mustn't he subculture?
mustn't we subculture?
mustn't you subculture?
mustn't they subculture? 	mustn't I be subculturing?
mustn't you be subculturing?
mustn't he be subculturing?
mustn't we be subculturing?
mustn't you be subculturing?
mustn't they be subculturing? 	mustn't I have subcultured?
mustn't you have subcultured?
mustn't he have subcultured?
mustn't we have subcultured?
mustn't you have subcultured?
mustn't they have subcultured? 	mustn't I have been subculturing?
mustn't you have been subculturing?
mustn't he have been subculturing?
mustn't we have been subculturing?
mustn't you have been subculturing?
mustn't they have been subculturing?