must tend
Regular verb: tend - tended- tended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tend
you must tend
he must tend
we must tend
you must tend
they must tend 	I must be tending
you must be tending
he must be tending
we must be tending
you must be tending
they must be tending	I must have tended
you must have tended
he must have tended
we must have tended
you must have tended
they must have tended	I must have been tending
you must have been tending
he must have been tending
we must have been tending
you must have been tending
they must have been tending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not tend
you must not tend
he must not tend
we must not tend
you must not tend
they must not tend 	I must not be tending
you must not be tending
he must not be tending
we must not be tending
you must not be tending
they must not be tending	I must not have tended
you must not have tended
he must not have tended
we must not have tended
you must not have tended
they must not have tended	I must not have been tending
you must not have been tending
he must not have been tending
we must not have been tending
you must not have been tending
they must not have been tending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tend?
must you tend?
must he tend?
must we tend?
must you tend?
must they tend? 	must I be tending?
must you be tending?
must he be tending?
must we be tending?
must you be tending?
must they be tending? 	must I have tended?
must you have tended?
must he have tended?
must we have tended?
must you have tended?
must they have tended? 	must I have been tending?
must you have been tending?
must he have been tending?
must we have been tending?
must you have been tending?
must they have been tending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not tend?
must you not tend?
must he not tend?
must we not tend?
must you not tend?
must they not tend? 	must I not be tending?
must you not be tending?
must he not be tending?
must we not be tending?
must you not be tending?
must they not be tending? 	must I not have tended?
must you not have tended?
must he not have tended?
must we not have tended?
must you not have tended?
must they not have tended? 	must I not have been tending?
must you not have been tending?
must he not have been tending?
must we not have been tending?
must you not have been tending?
must they not have been tending?