must troll
Regular verb: troll - trolled- trolled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must troll
you must troll
he must troll
we must troll
you must troll
they must troll 	I must be trolling
you must be trolling
he must be trolling
we must be trolling
you must be trolling
they must be trolling	I must have trolled
you must have trolled
he must have trolled
we must have trolled
you must have trolled
they must have trolled	I must have been trolling
you must have been trolling
he must have been trolling
we must have been trolling
you must have been trolling
they must have been trolling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not troll
you must not troll
he must not troll
we must not troll
you must not troll
they must not troll 	I must not be trolling
you must not be trolling
he must not be trolling
we must not be trolling
you must not be trolling
they must not be trolling	I must not have trolled
you must not have trolled
he must not have trolled
we must not have trolled
you must not have trolled
they must not have trolled	I must not have been trolling
you must not have been trolling
he must not have been trolling
we must not have been trolling
you must not have been trolling
they must not have been trolling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I troll?
must you troll?
must he troll?
must we troll?
must you troll?
must they troll? 	must I be trolling?
must you be trolling?
must he be trolling?
must we be trolling?
must you be trolling?
must they be trolling? 	must I have trolled?
must you have trolled?
must he have trolled?
must we have trolled?
must you have trolled?
must they have trolled? 	must I have been trolling?
must you have been trolling?
must he have been trolling?
must we have been trolling?
must you have been trolling?
must they have been trolling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not troll?
must you not troll?
must he not troll?
must we not troll?
must you not troll?
must they not troll? 	must I not be trolling?
must you not be trolling?
must he not be trolling?
must we not be trolling?
must you not be trolling?
must they not be trolling? 	must I not have trolled?
must you not have trolled?
must he not have trolled?
must we not have trolled?
must you not have trolled?
must they not have trolled? 	must I not have been trolling?
must you not have been trolling?
must he not have been trolling?
must we not have been trolling?
must you not have been trolling?
must they not have been trolling?