I must augur you must augur she must augur we must augur you must augur they must augur
V-ing form
I must be auguring you must be auguring she must be auguring we must be auguring you must be auguring they must be auguring
Perfect
I must have augured you must have augured she 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 she 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 she 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 she 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 she 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 she 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 she augur? must we augur? must you augur? must they augur?
V-ing form
must I be auguring? must you be auguring? must she be auguring? must we be auguring? must you be auguring? must they be auguring?
Perfect
must I have augured? must you have augured? must she 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 she 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 she 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 she 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 she 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 she have been auguring? mustn't we have been auguring? mustn't you have been auguring? mustn't they have been auguring?