must scaffold
Regular verb: scaffold - scaffolded- scaffolded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must scaffold
you must scaffold
he must scaffold
we must scaffold
you must scaffold
they must scaffold 	I must be scaffolding
you must be scaffolding
he must be scaffolding
we must be scaffolding
you must be scaffolding
they must be scaffolding	I must have scaffolded
you must have scaffolded
he must have scaffolded
we must have scaffolded
you must have scaffolded
they must have scaffolded	I must have been scaffolding
you must have been scaffolding
he must have been scaffolding
we must have been scaffolding
you must have been scaffolding
they must have been scaffolding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't scaffold
you mustn't scaffold
he mustn't scaffold
we mustn't scaffold
you mustn't scaffold
they mustn't scaffold 	I mustn't be scaffolding
you mustn't be scaffolding
he mustn't be scaffolding
we mustn't be scaffolding
you mustn't be scaffolding
they mustn't be scaffolding	I mustn't have scaffolded
you mustn't have scaffolded
he mustn't have scaffolded
we mustn't have scaffolded
you mustn't have scaffolded
they mustn't have scaffolded	I mustn't have been scaffolding
you mustn't have been scaffolding
he mustn't have been scaffolding
we mustn't have been scaffolding
you mustn't have been scaffolding
they mustn't have been scaffolding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I scaffold?
must you scaffold?
must he scaffold?
must we scaffold?
must you scaffold?
must they scaffold? 	must I be scaffolding?
must you be scaffolding?
must he be scaffolding?
must we be scaffolding?
must you be scaffolding?
must they be scaffolding? 	must I have scaffolded?
must you have scaffolded?
must he have scaffolded?
must we have scaffolded?
must you have scaffolded?
must they have scaffolded? 	must I have been scaffolding?
must you have been scaffolding?
must he have been scaffolding?
must we have been scaffolding?
must you have been scaffolding?
must they have been scaffolding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I scaffold?
mustn't you scaffold?
mustn't he scaffold?
mustn't we scaffold?
mustn't you scaffold?
mustn't they scaffold? 	mustn't I be scaffolding?
mustn't you be scaffolding?
mustn't he be scaffolding?
mustn't we be scaffolding?
mustn't you be scaffolding?
mustn't they be scaffolding? 	mustn't I have scaffolded?
mustn't you have scaffolded?
mustn't he have scaffolded?
mustn't we have scaffolded?
mustn't you have scaffolded?
mustn't they have scaffolded? 	mustn't I have been scaffolding?
mustn't you have been scaffolding?
mustn't he have been scaffolding?
mustn't we have been scaffolding?
mustn't you have been scaffolding?
mustn't they have been scaffolding?