must tender
Regular verb: tender - tendered- tendered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tender
you must tender
she must tender
we must tender
you must tender
they must tender 	I must be tendering
you must be tendering
she must be tendering
we must be tendering
you must be tendering
they must be tendering	I must have tendered
you must have tendered
she must have tendered
we must have tendered
you must have tendered
they must have tendered	I must have been tendering
you must have been tendering
she must have been tendering
we must have been tendering
you must have been tendering
they must have been tendering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't tender
you mustn't tender
she mustn't tender
we mustn't tender
you mustn't tender
they mustn't tender 	I mustn't be tendering
you mustn't be tendering
she mustn't be tendering
we mustn't be tendering
you mustn't be tendering
they mustn't be tendering	I mustn't have tendered
you mustn't have tendered
she mustn't have tendered
we mustn't have tendered
you mustn't have tendered
they mustn't have tendered	I mustn't have been tendering
you mustn't have been tendering
she mustn't have been tendering
we mustn't have been tendering
you mustn't have been tendering
they mustn't have been tendering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tender?
must you tender?
must she tender?
must we tender?
must you tender?
must they tender? 	must I be tendering?
must you be tendering?
must she be tendering?
must we be tendering?
must you be tendering?
must they be tendering? 	must I have tendered?
must you have tendered?
must she have tendered?
must we have tendered?
must you have tendered?
must they have tendered? 	must I have been tendering?
must you have been tendering?
must she have been tendering?
must we have been tendering?
must you have been tendering?
must they have been tendering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I tender?
mustn't you tender?
mustn't she tender?
mustn't we tender?
mustn't you tender?
mustn't they tender? 	mustn't I be tendering?
mustn't you be tendering?
mustn't she be tendering?
mustn't we be tendering?
mustn't you be tendering?
mustn't they be tendering? 	mustn't I have tendered?
mustn't you have tendered?
mustn't she have tendered?
mustn't we have tendered?
mustn't you have tendered?
mustn't they have tendered? 	mustn't I have been tendering?
mustn't you have been tendering?
mustn't she have been tendering?
mustn't we have been tendering?
mustn't you have been tendering?
mustn't they have been tendering?