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