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