must trice
Regular verb: trice - triced- triced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must trice
you must trice
he must trice
we must trice
you must trice
they must trice 	I must be tricing
you must be tricing
he must be tricing
we must be tricing
you must be tricing
they must be tricing	I must have triced
you must have triced
he must have triced
we must have triced
you must have triced
they must have triced	I must have been tricing
you must have been tricing
he must have been tricing
we must have been tricing
you must have been tricing
they must have been tricing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't trice
you mustn't trice
he mustn't trice
we mustn't trice
you mustn't trice
they mustn't trice 	I mustn't be tricing
you mustn't be tricing
he mustn't be tricing
we mustn't be tricing
you mustn't be tricing
they mustn't be tricing	I mustn't have triced
you mustn't have triced
he mustn't have triced
we mustn't have triced
you mustn't have triced
they mustn't have triced	I mustn't have been tricing
you mustn't have been tricing
he mustn't have been tricing
we mustn't have been tricing
you mustn't have been tricing
they mustn't have been tricing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I trice?
must you trice?
must he trice?
must we trice?
must you trice?
must they trice? 	must I be tricing?
must you be tricing?
must he be tricing?
must we be tricing?
must you be tricing?
must they be tricing? 	must I have triced?
must you have triced?
must he have triced?
must we have triced?
must you have triced?
must they have triced? 	must I have been tricing?
must you have been tricing?
must he have been tricing?
must we have been tricing?
must you have been tricing?
must they have been tricing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I trice?
mustn't you trice?
mustn't he trice?
mustn't we trice?
mustn't you trice?
mustn't they trice? 	mustn't I be tricing?
mustn't you be tricing?
mustn't he be tricing?
mustn't we be tricing?
mustn't you be tricing?
mustn't they be tricing? 	mustn't I have triced?
mustn't you have triced?
mustn't he have triced?
mustn't we have triced?
mustn't you have triced?
mustn't they have triced? 	mustn't I have been tricing?
mustn't you have been tricing?
mustn't he have been tricing?
mustn't we have been tricing?
mustn't you have been tricing?
mustn't they have been tricing?