I must defray you must defray she must defray we must defray you must defray they must defray
V-ing form
I must be defraying you must be defraying she must be defraying we must be defraying you must be defraying they must be defraying
Perfect
I must have defrayed you must have defrayed she must have defrayed we must have defrayed you must have defrayed they must have defrayed
V-ing perfect
I must have been defraying you must have been defraying she must have been defraying we must have been defraying you must have been defraying they must have been defraying
Negation
Simple form
I mustn't defray you mustn't defray she mustn't defray we mustn't defray you mustn't defray they mustn't defray
V-ing form
I mustn't be defraying you mustn't be defraying she mustn't be defraying we mustn't be defraying you mustn't be defraying they mustn't be defraying
Perfect
I mustn't have defrayed you mustn't have defrayed she mustn't have defrayed we mustn't have defrayed you mustn't have defrayed they mustn't have defrayed
V-ing perfect
I mustn't have been defraying you mustn't have been defraying she mustn't have been defraying we mustn't have been defraying you mustn't have been defraying they mustn't have been defraying
Interrogative form
Simple form
must I defray? must you defray? must she defray? must we defray? must you defray? must they defray?
V-ing form
must I be defraying? must you be defraying? must she be defraying? must we be defraying? must you be defraying? must they be defraying?
Perfect
must I have defrayed? must you have defrayed? must she have defrayed? must we have defrayed? must you have defrayed? must they have defrayed?
V-ing perfect
must I have been defraying? must you have been defraying? must she have been defraying? must we have been defraying? must you have been defraying? must they have been defraying?
Interro-negative form
Simple form
mustn't I defray? mustn't you defray? mustn't she defray? mustn't we defray? mustn't you defray? mustn't they defray?
V-ing form
mustn't I be defraying? mustn't you be defraying? mustn't she be defraying? mustn't we be defraying? mustn't you be defraying? mustn't they be defraying?
Perfect
mustn't I have defrayed? mustn't you have defrayed? mustn't she have defrayed? mustn't we have defrayed? mustn't you have defrayed? mustn't they have defrayed?
V-ing perfect
mustn't I have been defraying? mustn't you have been defraying? mustn't she have been defraying? mustn't we have been defraying? mustn't you have been defraying? mustn't they have been defraying?