must straphang
Regular verb: straphang - straphanged- straphanged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must straphang
you must straphang
he must straphang
we must straphang
you must straphang
they must straphang 	I must be straphanging
you must be straphanging
he must be straphanging
we must be straphanging
you must be straphanging
they must be straphanging	I must have straphanged
you must have straphanged
he must have straphanged
we must have straphanged
you must have straphanged
they must have straphanged	I must have been straphanging
you must have been straphanging
he must have been straphanging
we must have been straphanging
you must have been straphanging
they must have been straphanging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't straphang
you mustn't straphang
he mustn't straphang
we mustn't straphang
you mustn't straphang
they mustn't straphang 	I mustn't be straphanging
you mustn't be straphanging
he mustn't be straphanging
we mustn't be straphanging
you mustn't be straphanging
they mustn't be straphanging	I mustn't have straphanged
you mustn't have straphanged
he mustn't have straphanged
we mustn't have straphanged
you mustn't have straphanged
they mustn't have straphanged	I mustn't have been straphanging
you mustn't have been straphanging
he mustn't have been straphanging
we mustn't have been straphanging
you mustn't have been straphanging
they mustn't have been straphanging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I straphang?
must you straphang?
must he straphang?
must we straphang?
must you straphang?
must they straphang? 	must I be straphanging?
must you be straphanging?
must he be straphanging?
must we be straphanging?
must you be straphanging?
must they be straphanging? 	must I have straphanged?
must you have straphanged?
must he have straphanged?
must we have straphanged?
must you have straphanged?
must they have straphanged? 	must I have been straphanging?
must you have been straphanging?
must he have been straphanging?
must we have been straphanging?
must you have been straphanging?
must they have been straphanging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I straphang?
mustn't you straphang?
mustn't he straphang?
mustn't we straphang?
mustn't you straphang?
mustn't they straphang? 	mustn't I be straphanging?
mustn't you be straphanging?
mustn't he be straphanging?
mustn't we be straphanging?
mustn't you be straphanging?
mustn't they be straphanging? 	mustn't I have straphanged?
mustn't you have straphanged?
mustn't he have straphanged?
mustn't we have straphanged?
mustn't you have straphanged?
mustn't they have straphanged? 	mustn't I have been straphanging?
mustn't you have been straphanging?
mustn't he have been straphanging?
mustn't we have been straphanging?
mustn't you have been straphanging?
mustn't they have been straphanging?