must friend
Regular verb: friend - friended- friended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must friend
you must friend
he must friend
we must friend
you must friend
they must friend 	I must be friending
you must be friending
he must be friending
we must be friending
you must be friending
they must be friending	I must have friended
you must have friended
he must have friended
we must have friended
you must have friended
they must have friended	I must have been friending
you must have been friending
he must have been friending
we must have been friending
you must have been friending
they must have been friending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't friend
you mustn't friend
he mustn't friend
we mustn't friend
you mustn't friend
they mustn't friend 	I mustn't be friending
you mustn't be friending
he mustn't be friending
we mustn't be friending
you mustn't be friending
they mustn't be friending	I mustn't have friended
you mustn't have friended
he mustn't have friended
we mustn't have friended
you mustn't have friended
they mustn't have friended	I mustn't have been friending
you mustn't have been friending
he mustn't have been friending
we mustn't have been friending
you mustn't have been friending
they mustn't have been friending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I friend?
must you friend?
must he friend?
must we friend?
must you friend?
must they friend? 	must I be friending?
must you be friending?
must he be friending?
must we be friending?
must you be friending?
must they be friending? 	must I have friended?
must you have friended?
must he have friended?
must we have friended?
must you have friended?
must they have friended? 	must I have been friending?
must you have been friending?
must he have been friending?
must we have been friending?
must you have been friending?
must they have been friending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I friend?
mustn't you friend?
mustn't he friend?
mustn't we friend?
mustn't you friend?
mustn't they friend? 	mustn't I be friending?
mustn't you be friending?
mustn't he be friending?
mustn't we be friending?
mustn't you be friending?
mustn't they be friending? 	mustn't I have friended?
mustn't you have friended?
mustn't he have friended?
mustn't we have friended?
mustn't you have friended?
mustn't they have friended? 	mustn't I have been friending?
mustn't you have been friending?
mustn't he have been friending?
mustn't we have been friending?
mustn't you have been friending?
mustn't they have been friending?