must fend
Regular verb: fend - fended- fended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fend
you must fend
he must fend
we must fend
you must fend
they must fend 	I must be fending
you must be fending
he must be fending
we must be fending
you must be fending
they must be fending	I must have fended
you must have fended
he must have fended
we must have fended
you must have fended
they must have fended	I must have been fending
you must have been fending
he must have been fending
we must have been fending
you must have been fending
they must have been fending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't fend
you mustn't fend
he mustn't fend
we mustn't fend
you mustn't fend
they mustn't fend 	I mustn't be fending
you mustn't be fending
he mustn't be fending
we mustn't be fending
you mustn't be fending
they mustn't be fending	I mustn't have fended
you mustn't have fended
he mustn't have fended
we mustn't have fended
you mustn't have fended
they mustn't have fended	I mustn't have been fending
you mustn't have been fending
he mustn't have been fending
we mustn't have been fending
you mustn't have been fending
they mustn't have been fending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fend?
must you fend?
must he fend?
must we fend?
must you fend?
must they fend? 	must I be fending?
must you be fending?
must he be fending?
must we be fending?
must you be fending?
must they be fending? 	must I have fended?
must you have fended?
must he have fended?
must we have fended?
must you have fended?
must they have fended? 	must I have been fending?
must you have been fending?
must he have been fending?
must we have been fending?
must you have been fending?
must they have been fending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I fend?
mustn't you fend?
mustn't he fend?
mustn't we fend?
mustn't you fend?
mustn't they fend? 	mustn't I be fending?
mustn't you be fending?
mustn't he be fending?
mustn't we be fending?
mustn't you be fending?
mustn't they be fending? 	mustn't I have fended?
mustn't you have fended?
mustn't he have fended?
mustn't we have fended?
mustn't you have fended?
mustn't they have fended? 	mustn't I have been fending?
mustn't you have been fending?
mustn't he have been fending?
mustn't we have been fending?
mustn't you have been fending?
mustn't they have been fending?