must whang
Regular verb: whang - whanged- whanged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must whang
you must whang
he must whang
we must whang
you must whang
they must whang 	I must be whanging
you must be whanging
he must be whanging
we must be whanging
you must be whanging
they must be whanging	I must have whanged
you must have whanged
he must have whanged
we must have whanged
you must have whanged
they must have whanged	I must have been whanging
you must have been whanging
he must have been whanging
we must have been whanging
you must have been whanging
they must have been whanging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't whang
you mustn't whang
he mustn't whang
we mustn't whang
you mustn't whang
they mustn't whang 	I mustn't be whanging
you mustn't be whanging
he mustn't be whanging
we mustn't be whanging
you mustn't be whanging
they mustn't be whanging	I mustn't have whanged
you mustn't have whanged
he mustn't have whanged
we mustn't have whanged
you mustn't have whanged
they mustn't have whanged	I mustn't have been whanging
you mustn't have been whanging
he mustn't have been whanging
we mustn't have been whanging
you mustn't have been whanging
they mustn't have been whanging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I whang?
must you whang?
must he whang?
must we whang?
must you whang?
must they whang? 	must I be whanging?
must you be whanging?
must he be whanging?
must we be whanging?
must you be whanging?
must they be whanging? 	must I have whanged?
must you have whanged?
must he have whanged?
must we have whanged?
must you have whanged?
must they have whanged? 	must I have been whanging?
must you have been whanging?
must he have been whanging?
must we have been whanging?
must you have been whanging?
must they have been whanging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I whang?
mustn't you whang?
mustn't he whang?
mustn't we whang?
mustn't you whang?
mustn't they whang? 	mustn't I be whanging?
mustn't you be whanging?
mustn't he be whanging?
mustn't we be whanging?
mustn't you be whanging?
mustn't they be whanging? 	mustn't I have whanged?
mustn't you have whanged?
mustn't he have whanged?
mustn't we have whanged?
mustn't you have whanged?
mustn't they have whanged? 	mustn't I have been whanging?
mustn't you have been whanging?
mustn't he have been whanging?
mustn't we have been whanging?
mustn't you have been whanging?
mustn't they have been whanging?