I must defray you must defray he must defray we must defray you must defray they must defray
V-ing form
I must be defraying you must be defraying he must be defraying we must be defraying you must be defraying they must be defraying
Perfect
I must have defrayed you must have defrayed he 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 he 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 he 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 he 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 he 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 he 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 he defray? must we defray? must you defray? must they defray?
V-ing form
must I be defraying? must you be defraying? must he be defraying? must we be defraying? must you be defraying? must they be defraying?
Perfect
must I have defrayed? must you have defrayed? must he 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 he 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 he 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 he 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 he 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 he have been defraying? mustn't we have been defraying? mustn't you have been defraying? mustn't they have been defraying?