must emend
Regular verb: emend - emended- emended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must emend
you must emend
he must emend
we must emend
you must emend
they must emend 	I must be emending
you must be emending
he must be emending
we must be emending
you must be emending
they must be emending	I must have emended
you must have emended
he must have emended
we must have emended
you must have emended
they must have emended	I must have been emending
you must have been emending
he must have been emending
we must have been emending
you must have been emending
they must have been emending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't emend
you mustn't emend
he mustn't emend
we mustn't emend
you mustn't emend
they mustn't emend 	I mustn't be emending
you mustn't be emending
he mustn't be emending
we mustn't be emending
you mustn't be emending
they mustn't be emending	I mustn't have emended
you mustn't have emended
he mustn't have emended
we mustn't have emended
you mustn't have emended
they mustn't have emended	I mustn't have been emending
you mustn't have been emending
he mustn't have been emending
we mustn't have been emending
you mustn't have been emending
they mustn't have been emending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I emend?
must you emend?
must he emend?
must we emend?
must you emend?
must they emend? 	must I be emending?
must you be emending?
must he be emending?
must we be emending?
must you be emending?
must they be emending? 	must I have emended?
must you have emended?
must he have emended?
must we have emended?
must you have emended?
must they have emended? 	must I have been emending?
must you have been emending?
must he have been emending?
must we have been emending?
must you have been emending?
must they have been emending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I emend?
mustn't you emend?
mustn't he emend?
mustn't we emend?
mustn't you emend?
mustn't they emend? 	mustn't I be emending?
mustn't you be emending?
mustn't he be emending?
mustn't we be emending?
mustn't you be emending?
mustn't they be emending? 	mustn't I have emended?
mustn't you have emended?
mustn't he have emended?
mustn't we have emended?
mustn't you have emended?
mustn't they have emended? 	mustn't I have been emending?
mustn't you have been emending?
mustn't he have been emending?
mustn't we have been emending?
mustn't you have been emending?
mustn't they have been emending?