must foresee
Irregular verb: foresee - foresaw- foreseen

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must foresee
you must foresee
he must foresee
we must foresee
you must foresee
they must foresee 	I must be foreseeing
you must be foreseeing
he must be foreseeing
we must be foreseeing
you must be foreseeing
they must be foreseeing	I must have foreseen
you must have foreseen
he must have foreseen
we must have foreseen
you must have foreseen
they must have foreseen	I must have been foreseeing
you must have been foreseeing
he must have been foreseeing
we must have been foreseeing
you must have been foreseeing
they must have been foreseeing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't foresee
you mustn't foresee
he mustn't foresee
we mustn't foresee
you mustn't foresee
they mustn't foresee 	I mustn't be foreseeing
you mustn't be foreseeing
he mustn't be foreseeing
we mustn't be foreseeing
you mustn't be foreseeing
they mustn't be foreseeing	I mustn't have foreseen
you mustn't have foreseen
he mustn't have foreseen
we mustn't have foreseen
you mustn't have foreseen
they mustn't have foreseen	I mustn't have been foreseeing
you mustn't have been foreseeing
he mustn't have been foreseeing
we mustn't have been foreseeing
you mustn't have been foreseeing
they mustn't have been foreseeing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I foresee?
must you foresee?
must he foresee?
must we foresee?
must you foresee?
must they foresee? 	must I be foreseeing?
must you be foreseeing?
must he be foreseeing?
must we be foreseeing?
must you be foreseeing?
must they be foreseeing? 	must I have foreseen?
must you have foreseen?
must he have foreseen?
must we have foreseen?
must you have foreseen?
must they have foreseen? 	must I have been foreseeing?
must you have been foreseeing?
must he have been foreseeing?
must we have been foreseeing?
must you have been foreseeing?
must they have been foreseeing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I foresee?
mustn't you foresee?
mustn't he foresee?
mustn't we foresee?
mustn't you foresee?
mustn't they foresee? 	mustn't I be foreseeing?
mustn't you be foreseeing?
mustn't he be foreseeing?
mustn't we be foreseeing?
mustn't you be foreseeing?
mustn't they be foreseeing? 	mustn't I have foreseen?
mustn't you have foreseen?
mustn't he have foreseen?
mustn't we have foreseen?
mustn't you have foreseen?
mustn't they have foreseen? 	mustn't I have been foreseeing?
mustn't you have been foreseeing?
mustn't he have been foreseeing?
mustn't we have been foreseeing?
mustn't you have been foreseeing?
mustn't they have been foreseeing?