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