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