I must repay you must repay she must repay we must repay you must repay they must repay
V-ing form
I must be repaying you must be repaying she must be repaying we must be repaying you must be repaying they must be repaying
Perfect
I must have repaid you must have repaid she must have repaid we must have repaid you must have repaid they must have repaid
V-ing perfect
I must have been repaying you must have been repaying she must have been repaying we must have been repaying you must have been repaying they must have been repaying
Negation
Simple form
I must not repay you must not repay she must not repay we must not repay you must not repay they must not repay
V-ing form
I must not be repaying you must not be repaying she must not be repaying we must not be repaying you must not be repaying they must not be repaying
Perfect
I must not have repaid you must not have repaid she must not have repaid we must not have repaid you must not have repaid they must not have repaid
V-ing perfect
I must not have been repaying you must not have been repaying she must not have been repaying we must not have been repaying you must not have been repaying they must not have been repaying
Interrogative form
Simple form
must I repay? must you repay? must she repay? must we repay? must you repay? must they repay?
V-ing form
must I be repaying? must you be repaying? must she be repaying? must we be repaying? must you be repaying? must they be repaying?
Perfect
must I have repaid? must you have repaid? must she have repaid? must we have repaid? must you have repaid? must they have repaid?
V-ing perfect
must I have been repaying? must you have been repaying? must she have been repaying? must we have been repaying? must you have been repaying? must they have been repaying?
Interro-negative form
Simple form
must I not repay? must you not repay? must she not repay? must we not repay? must you not repay? must they not repay?
V-ing form
must I not be repaying? must you not be repaying? must she not be repaying? must we not be repaying? must you not be repaying? must they not be repaying?
Perfect
must I not have repaid? must you not have repaid? must she not have repaid? must we not have repaid? must you not have repaid? must they not have repaid?
V-ing perfect
must I not have been repaying? must you not have been repaying? must she not have been repaying? must we not have been repaying? must you not have been repaying? must they not have been repaying?