must french-kiss
Regular verb: french-kiss - french-kissed- french-kissed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must french-kiss
you must french-kiss
he must french-kiss
we must french-kiss
you must french-kiss
they must french-kiss 	I must be french-kissing
you must be french-kissing
he must be french-kissing
we must be french-kissing
you must be french-kissing
they must be french-kissing	I must have french-kissed
you must have french-kissed
he must have french-kissed
we must have french-kissed
you must have french-kissed
they must have french-kissed	I must have been french-kissing
you must have been french-kissing
he must have been french-kissing
we must have been french-kissing
you must have been french-kissing
they must have been french-kissing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't french-kiss
you mustn't french-kiss
he mustn't french-kiss
we mustn't french-kiss
you mustn't french-kiss
they mustn't french-kiss 	I mustn't be french-kissing
you mustn't be french-kissing
he mustn't be french-kissing
we mustn't be french-kissing
you mustn't be french-kissing
they mustn't be french-kissing	I mustn't have french-kissed
you mustn't have french-kissed
he mustn't have french-kissed
we mustn't have french-kissed
you mustn't have french-kissed
they mustn't have french-kissed	I mustn't have been french-kissing
you mustn't have been french-kissing
he mustn't have been french-kissing
we mustn't have been french-kissing
you mustn't have been french-kissing
they mustn't have been french-kissing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I french-kiss?
must you french-kiss?
must he french-kiss?
must we french-kiss?
must you french-kiss?
must they french-kiss? 	must I be french-kissing?
must you be french-kissing?
must he be french-kissing?
must we be french-kissing?
must you be french-kissing?
must they be french-kissing? 	must I have french-kissed?
must you have french-kissed?
must he have french-kissed?
must we have french-kissed?
must you have french-kissed?
must they have french-kissed? 	must I have been french-kissing?
must you have been french-kissing?
must he have been french-kissing?
must we have been french-kissing?
must you have been french-kissing?
must they have been french-kissing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I french-kiss?
mustn't you french-kiss?
mustn't he french-kiss?
mustn't we french-kiss?
mustn't you french-kiss?
mustn't they french-kiss? 	mustn't I be french-kissing?
mustn't you be french-kissing?
mustn't he be french-kissing?
mustn't we be french-kissing?
mustn't you be french-kissing?
mustn't they be french-kissing? 	mustn't I have french-kissed?
mustn't you have french-kissed?
mustn't he have french-kissed?
mustn't we have french-kissed?
mustn't you have french-kissed?
mustn't they have french-kissed? 	mustn't I have been french-kissing?
mustn't you have been french-kissing?
mustn't he have been french-kissing?
mustn't we have been french-kissing?
mustn't you have been french-kissing?
mustn't they have been french-kissing?