must repel
Regular verb: repel - repelled- repelled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must repel
you must repel
he must repel
we must repel
you must repel
they must repel 	I must be repelling
you must be repelling
he must be repelling
we must be repelling
you must be repelling
they must be repelling	I must have repelled
you must have repelled
he must have repelled
we must have repelled
you must have repelled
they must have repelled	I must have been repelling
you must have been repelling
he must have been repelling
we must have been repelling
you must have been repelling
they must have been repelling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't repel
you mustn't repel
he mustn't repel
we mustn't repel
you mustn't repel
they mustn't repel 	I mustn't be repelling
you mustn't be repelling
he mustn't be repelling
we mustn't be repelling
you mustn't be repelling
they mustn't be repelling	I mustn't have repelled
you mustn't have repelled
he mustn't have repelled
we mustn't have repelled
you mustn't have repelled
they mustn't have repelled	I mustn't have been repelling
you mustn't have been repelling
he mustn't have been repelling
we mustn't have been repelling
you mustn't have been repelling
they mustn't have been repelling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I repel?
must you repel?
must he repel?
must we repel?
must you repel?
must they repel? 	must I be repelling?
must you be repelling?
must he be repelling?
must we be repelling?
must you be repelling?
must they be repelling? 	must I have repelled?
must you have repelled?
must he have repelled?
must we have repelled?
must you have repelled?
must they have repelled? 	must I have been repelling?
must you have been repelling?
must he have been repelling?
must we have been repelling?
must you have been repelling?
must they have been repelling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I repel?
mustn't you repel?
mustn't he repel?
mustn't we repel?
mustn't you repel?
mustn't they repel? 	mustn't I be repelling?
mustn't you be repelling?
mustn't he be repelling?
mustn't we be repelling?
mustn't you be repelling?
mustn't they be repelling? 	mustn't I have repelled?
mustn't you have repelled?
mustn't he have repelled?
mustn't we have repelled?
mustn't you have repelled?
mustn't they have repelled? 	mustn't I have been repelling?
mustn't you have been repelling?
mustn't he have been repelling?
mustn't we have been repelling?
mustn't you have been repelling?
mustn't they have been repelling?