I must repel you must repel he must repel we must repel you must repel they must repel
V-ing form
I must be repelling you must be repelling he must be repelling we must be repelling you must be repelling they must be repelling
Perfect
I must have repelled you must have repelled he must have repelled we must have repelled you must have repelled they must have repelled
V-ing perfect
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
I must not repel you must not repel he must not repel we must not repel you must not repel they must not repel
V-ing form
I must not be repelling you must not be repelling he must not be repelling we must not be repelling you must not be repelling they must not be repelling
Perfect
I must not have repelled you must not have repelled he must not have repelled we must not have repelled you must not have repelled they must not have repelled
V-ing perfect
I must not have been repelling you must not have been repelling he must not have been repelling we must not have been repelling you must not have been repelling they must not have been repelling
Interrogative form
Simple form
must I repel? must you repel? must he repel? must we repel? must you repel? must they repel?
V-ing form
must I be repelling? must you be repelling? must he be repelling? must we be repelling? must you be repelling? must they be repelling?
Perfect
must I have repelled? must you have repelled? must he have repelled? must we have repelled? must you have repelled? must they have repelled?
V-ing perfect
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
must I not repel? must you not repel? must he not repel? must we not repel? must you not repel? must they not repel?
V-ing form
must I not be repelling? must you not be repelling? must he not be repelling? must we not be repelling? must you not be repelling? must they not be repelling?
Perfect
must I not have repelled? must you not have repelled? must he not have repelled? must we not have repelled? must you not have repelled? must they not have repelled?
V-ing perfect
must I not have been repelling? must you not have been repelling? must he not have been repelling? must we not have been repelling? must you not have been repelling? must they not have been repelling?