must trap
Regular verb: trap - trapped- trapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must trap
you must trap
he must trap
we must trap
you must trap
they must trap 	I must be trapping
you must be trapping
he must be trapping
we must be trapping
you must be trapping
they must be trapping	I must have trapped
you must have trapped
he must have trapped
we must have trapped
you must have trapped
they must have trapped	I must have been trapping
you must have been trapping
he must have been trapping
we must have been trapping
you must have been trapping
they must have been trapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not trap
you must not trap
he must not trap
we must not trap
you must not trap
they must not trap 	I must not be trapping
you must not be trapping
he must not be trapping
we must not be trapping
you must not be trapping
they must not be trapping	I must not have trapped
you must not have trapped
he must not have trapped
we must not have trapped
you must not have trapped
they must not have trapped	I must not have been trapping
you must not have been trapping
he must not have been trapping
we must not have been trapping
you must not have been trapping
they must not have been trapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I trap?
must you trap?
must he trap?
must we trap?
must you trap?
must they trap? 	must I be trapping?
must you be trapping?
must he be trapping?
must we be trapping?
must you be trapping?
must they be trapping? 	must I have trapped?
must you have trapped?
must he have trapped?
must we have trapped?
must you have trapped?
must they have trapped? 	must I have been trapping?
must you have been trapping?
must he have been trapping?
must we have been trapping?
must you have been trapping?
must they have been trapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not trap?
must you not trap?
must he not trap?
must we not trap?
must you not trap?
must they not trap? 	must I not be trapping?
must you not be trapping?
must he not be trapping?
must we not be trapping?
must you not be trapping?
must they not be trapping? 	must I not have trapped?
must you not have trapped?
must he not have trapped?
must we not have trapped?
must you not have trapped?
must they not have trapped? 	must I not have been trapping?
must you not have been trapping?
must he not have been trapping?
must we not have been trapping?
must you not have been trapping?
must they not have been trapping?