must motor
Regular verb: motor - motored- motored

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must motor
you must motor
he must motor
we must motor
you must motor
they must motor 	I must be motoring
you must be motoring
he must be motoring
we must be motoring
you must be motoring
they must be motoring	I must have motored
you must have motored
he must have motored
we must have motored
you must have motored
they must have motored	I must have been motoring
you must have been motoring
he must have been motoring
we must have been motoring
you must have been motoring
they must have been motoring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't motor
you mustn't motor
he mustn't motor
we mustn't motor
you mustn't motor
they mustn't motor 	I mustn't be motoring
you mustn't be motoring
he mustn't be motoring
we mustn't be motoring
you mustn't be motoring
they mustn't be motoring	I mustn't have motored
you mustn't have motored
he mustn't have motored
we mustn't have motored
you mustn't have motored
they mustn't have motored	I mustn't have been motoring
you mustn't have been motoring
he mustn't have been motoring
we mustn't have been motoring
you mustn't have been motoring
they mustn't have been motoring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I motor?
must you motor?
must he motor?
must we motor?
must you motor?
must they motor? 	must I be motoring?
must you be motoring?
must he be motoring?
must we be motoring?
must you be motoring?
must they be motoring? 	must I have motored?
must you have motored?
must he have motored?
must we have motored?
must you have motored?
must they have motored? 	must I have been motoring?
must you have been motoring?
must he have been motoring?
must we have been motoring?
must you have been motoring?
must they have been motoring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I motor?
mustn't you motor?
mustn't he motor?
mustn't we motor?
mustn't you motor?
mustn't they motor? 	mustn't I be motoring?
mustn't you be motoring?
mustn't he be motoring?
mustn't we be motoring?
mustn't you be motoring?
mustn't they be motoring? 	mustn't I have motored?
mustn't you have motored?
mustn't he have motored?
mustn't we have motored?
mustn't you have motored?
mustn't they have motored? 	mustn't I have been motoring?
mustn't you have been motoring?
mustn't he have been motoring?
mustn't we have been motoring?
mustn't you have been motoring?
mustn't they have been motoring?