must nurture
Regular verb: nurture - nurtured- nurtured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must nurture
you must nurture
she must nurture
we must nurture
you must nurture
they must nurture 	I must be nurturing
you must be nurturing
she must be nurturing
we must be nurturing
you must be nurturing
they must be nurturing	I must have nurtured
you must have nurtured
she must have nurtured
we must have nurtured
you must have nurtured
they must have nurtured	I must have been nurturing
you must have been nurturing
she must have been nurturing
we must have been nurturing
you must have been nurturing
they must have been nurturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't nurture
you mustn't nurture
she mustn't nurture
we mustn't nurture
you mustn't nurture
they mustn't nurture 	I mustn't be nurturing
you mustn't be nurturing
she mustn't be nurturing
we mustn't be nurturing
you mustn't be nurturing
they mustn't be nurturing	I mustn't have nurtured
you mustn't have nurtured
she mustn't have nurtured
we mustn't have nurtured
you mustn't have nurtured
they mustn't have nurtured	I mustn't have been nurturing
you mustn't have been nurturing
she mustn't have been nurturing
we mustn't have been nurturing
you mustn't have been nurturing
they mustn't have been nurturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I nurture?
must you nurture?
must she nurture?
must we nurture?
must you nurture?
must they nurture? 	must I be nurturing?
must you be nurturing?
must she be nurturing?
must we be nurturing?
must you be nurturing?
must they be nurturing? 	must I have nurtured?
must you have nurtured?
must she have nurtured?
must we have nurtured?
must you have nurtured?
must they have nurtured? 	must I have been nurturing?
must you have been nurturing?
must she have been nurturing?
must we have been nurturing?
must you have been nurturing?
must they have been nurturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I nurture?
mustn't you nurture?
mustn't she nurture?
mustn't we nurture?
mustn't you nurture?
mustn't they nurture? 	mustn't I be nurturing?
mustn't you be nurturing?
mustn't she be nurturing?
mustn't we be nurturing?
mustn't you be nurturing?
mustn't they be nurturing? 	mustn't I have nurtured?
mustn't you have nurtured?
mustn't she have nurtured?
mustn't we have nurtured?
mustn't you have nurtured?
mustn't they have nurtured? 	mustn't I have been nurturing?
mustn't you have been nurturing?
mustn't she have been nurturing?
mustn't we have been nurturing?
mustn't you have been nurturing?
mustn't they have been nurturing?