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