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