must glower
Regular verb: glower - glowered- glowered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must glower
you must glower
she must glower
we must glower
you must glower
they must glower 	I must be glowering
you must be glowering
she must be glowering
we must be glowering
you must be glowering
they must be glowering	I must have glowered
you must have glowered
she must have glowered
we must have glowered
you must have glowered
they must have glowered	I must have been glowering
you must have been glowering
she must have been glowering
we must have been glowering
you must have been glowering
they must have been glowering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't glower
you mustn't glower
she mustn't glower
we mustn't glower
you mustn't glower
they mustn't glower 	I mustn't be glowering
you mustn't be glowering
she mustn't be glowering
we mustn't be glowering
you mustn't be glowering
they mustn't be glowering	I mustn't have glowered
you mustn't have glowered
she mustn't have glowered
we mustn't have glowered
you mustn't have glowered
they mustn't have glowered	I mustn't have been glowering
you mustn't have been glowering
she mustn't have been glowering
we mustn't have been glowering
you mustn't have been glowering
they mustn't have been glowering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I glower?
must you glower?
must she glower?
must we glower?
must you glower?
must they glower? 	must I be glowering?
must you be glowering?
must she be glowering?
must we be glowering?
must you be glowering?
must they be glowering? 	must I have glowered?
must you have glowered?
must she have glowered?
must we have glowered?
must you have glowered?
must they have glowered? 	must I have been glowering?
must you have been glowering?
must she have been glowering?
must we have been glowering?
must you have been glowering?
must they have been glowering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I glower?
mustn't you glower?
mustn't she glower?
mustn't we glower?
mustn't you glower?
mustn't they glower? 	mustn't I be glowering?
mustn't you be glowering?
mustn't she be glowering?
mustn't we be glowering?
mustn't you be glowering?
mustn't they be glowering? 	mustn't I have glowered?
mustn't you have glowered?
mustn't she have glowered?
mustn't we have glowered?
mustn't you have glowered?
mustn't they have glowered? 	mustn't I have been glowering?
mustn't you have been glowering?
mustn't she have been glowering?
mustn't we have been glowering?
mustn't you have been glowering?
mustn't they have been glowering?