must peruse
Regular verb: peruse - perused- perused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must peruse
you must peruse
he must peruse
we must peruse
you must peruse
they must peruse 	I must be perusing
you must be perusing
he must be perusing
we must be perusing
you must be perusing
they must be perusing	I must have perused
you must have perused
he must have perused
we must have perused
you must have perused
they must have perused	I must have been perusing
you must have been perusing
he must have been perusing
we must have been perusing
you must have been perusing
they must have been perusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not peruse
you must not peruse
he must not peruse
we must not peruse
you must not peruse
they must not peruse 	I must not be perusing
you must not be perusing
he must not be perusing
we must not be perusing
you must not be perusing
they must not be perusing	I must not have perused
you must not have perused
he must not have perused
we must not have perused
you must not have perused
they must not have perused	I must not have been perusing
you must not have been perusing
he must not have been perusing
we must not have been perusing
you must not have been perusing
they must not have been perusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I peruse?
must you peruse?
must he peruse?
must we peruse?
must you peruse?
must they peruse? 	must I be perusing?
must you be perusing?
must he be perusing?
must we be perusing?
must you be perusing?
must they be perusing? 	must I have perused?
must you have perused?
must he have perused?
must we have perused?
must you have perused?
must they have perused? 	must I have been perusing?
must you have been perusing?
must he have been perusing?
must we have been perusing?
must you have been perusing?
must they have been perusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not peruse?
must you not peruse?
must he not peruse?
must we not peruse?
must you not peruse?
must they not peruse? 	must I not be perusing?
must you not be perusing?
must he not be perusing?
must we not be perusing?
must you not be perusing?
must they not be perusing? 	must I not have perused?
must you not have perused?
must he not have perused?
must we not have perused?
must you not have perused?
must they not have perused? 	must I not have been perusing?
must you not have been perusing?
must he not have been perusing?
must we not have been perusing?
must you not have been perusing?
must they not have been perusing?