I must dismay you must dismay he must dismay we must dismay you must dismay they must dismay
V-ing form
I must be dismaying you must be dismaying he must be dismaying we must be dismaying you must be dismaying they must be dismaying
Perfect
I must have dismayed you must have dismayed he must have dismayed we must have dismayed you must have dismayed they must have dismayed
V-ing perfect
I must have been dismaying you must have been dismaying he must have been dismaying we must have been dismaying you must have been dismaying they must have been dismaying
Negation
Simple form
I mustn't dismay you mustn't dismay he mustn't dismay we mustn't dismay you mustn't dismay they mustn't dismay
V-ing form
I mustn't be dismaying you mustn't be dismaying he mustn't be dismaying we mustn't be dismaying you mustn't be dismaying they mustn't be dismaying
Perfect
I mustn't have dismayed you mustn't have dismayed he mustn't have dismayed we mustn't have dismayed you mustn't have dismayed they mustn't have dismayed
V-ing perfect
I mustn't have been dismaying you mustn't have been dismaying he mustn't have been dismaying we mustn't have been dismaying you mustn't have been dismaying they mustn't have been dismaying
Interrogative form
Simple form
must I dismay? must you dismay? must he dismay? must we dismay? must you dismay? must they dismay?
V-ing form
must I be dismaying? must you be dismaying? must he be dismaying? must we be dismaying? must you be dismaying? must they be dismaying?
Perfect
must I have dismayed? must you have dismayed? must he have dismayed? must we have dismayed? must you have dismayed? must they have dismayed?
V-ing perfect
must I have been dismaying? must you have been dismaying? must he have been dismaying? must we have been dismaying? must you have been dismaying? must they have been dismaying?
Interro-negative form
Simple form
mustn't I dismay? mustn't you dismay? mustn't he dismay? mustn't we dismay? mustn't you dismay? mustn't they dismay?
V-ing form
mustn't I be dismaying? mustn't you be dismaying? mustn't he be dismaying? mustn't we be dismaying? mustn't you be dismaying? mustn't they be dismaying?
Perfect
mustn't I have dismayed? mustn't you have dismayed? mustn't he have dismayed? mustn't we have dismayed? mustn't you have dismayed? mustn't they have dismayed?
V-ing perfect
mustn't I have been dismaying? mustn't you have been dismaying? mustn't he have been dismaying? mustn't we have been dismaying? mustn't you have been dismaying? mustn't they have been dismaying?