must fast-talk
Regular verb: fast-talk - fast-talked- fast-talked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fast-talk
you must fast-talk
she must fast-talk
we must fast-talk
you must fast-talk
they must fast-talk 	I must be fast-talking
you must be fast-talking
she must be fast-talking
we must be fast-talking
you must be fast-talking
they must be fast-talking	I must have fast-talked
you must have fast-talked
she must have fast-talked
we must have fast-talked
you must have fast-talked
they must have fast-talked	I must have been fast-talking
you must have been fast-talking
she must have been fast-talking
we must have been fast-talking
you must have been fast-talking
they must have been fast-talking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't fast-talk
you mustn't fast-talk
she mustn't fast-talk
we mustn't fast-talk
you mustn't fast-talk
they mustn't fast-talk 	I mustn't be fast-talking
you mustn't be fast-talking
she mustn't be fast-talking
we mustn't be fast-talking
you mustn't be fast-talking
they mustn't be fast-talking	I mustn't have fast-talked
you mustn't have fast-talked
she mustn't have fast-talked
we mustn't have fast-talked
you mustn't have fast-talked
they mustn't have fast-talked	I mustn't have been fast-talking
you mustn't have been fast-talking
she mustn't have been fast-talking
we mustn't have been fast-talking
you mustn't have been fast-talking
they mustn't have been fast-talking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fast-talk?
must you fast-talk?
must she fast-talk?
must we fast-talk?
must you fast-talk?
must they fast-talk? 	must I be fast-talking?
must you be fast-talking?
must she be fast-talking?
must we be fast-talking?
must you be fast-talking?
must they be fast-talking? 	must I have fast-talked?
must you have fast-talked?
must she have fast-talked?
must we have fast-talked?
must you have fast-talked?
must they have fast-talked? 	must I have been fast-talking?
must you have been fast-talking?
must she have been fast-talking?
must we have been fast-talking?
must you have been fast-talking?
must they have been fast-talking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I fast-talk?
mustn't you fast-talk?
mustn't she fast-talk?
mustn't we fast-talk?
mustn't you fast-talk?
mustn't they fast-talk? 	mustn't I be fast-talking?
mustn't you be fast-talking?
mustn't she be fast-talking?
mustn't we be fast-talking?
mustn't you be fast-talking?
mustn't they be fast-talking? 	mustn't I have fast-talked?
mustn't you have fast-talked?
mustn't she have fast-talked?
mustn't we have fast-talked?
mustn't you have fast-talked?
mustn't they have fast-talked? 	mustn't I have been fast-talking?
mustn't you have been fast-talking?
mustn't she have been fast-talking?
mustn't we have been fast-talking?
mustn't you have been fast-talking?
mustn't they have been fast-talking?