must retake
Irregular verb: retake - retook- retaken

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must retake
you must retake
he must retake
we must retake
you must retake
they must retake 	I must be retaking
you must be retaking
he must be retaking
we must be retaking
you must be retaking
they must be retaking	I must have retaken
you must have retaken
he must have retaken
we must have retaken
you must have retaken
they must have retaken	I must have been retaking
you must have been retaking
he must have been retaking
we must have been retaking
you must have been retaking
they must have been retaking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not retake
you must not retake
he must not retake
we must not retake
you must not retake
they must not retake 	I must not be retaking
you must not be retaking
he must not be retaking
we must not be retaking
you must not be retaking
they must not be retaking	I must not have retaken
you must not have retaken
he must not have retaken
we must not have retaken
you must not have retaken
they must not have retaken	I must not have been retaking
you must not have been retaking
he must not have been retaking
we must not have been retaking
you must not have been retaking
they must not have been retaking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I retake?
must you retake?
must he retake?
must we retake?
must you retake?
must they retake? 	must I be retaking?
must you be retaking?
must he be retaking?
must we be retaking?
must you be retaking?
must they be retaking? 	must I have retaken?
must you have retaken?
must he have retaken?
must we have retaken?
must you have retaken?
must they have retaken? 	must I have been retaking?
must you have been retaking?
must he have been retaking?
must we have been retaking?
must you have been retaking?
must they have been retaking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not retake?
must you not retake?
must he not retake?
must we not retake?
must you not retake?
must they not retake? 	must I not be retaking?
must you not be retaking?
must he not be retaking?
must we not be retaking?
must you not be retaking?
must they not be retaking? 	must I not have retaken?
must you not have retaken?
must he not have retaken?
must we not have retaken?
must you not have retaken?
must they not have retaken? 	must I not have been retaking?
must you not have been retaking?
must he not have been retaking?
must we not have been retaking?
must you not have been retaking?
must they not have been retaking?