I must truncate you must truncate she must truncate we must truncate you must truncate they must truncate
V-ing form
I must be truncating you must be truncating she must be truncating we must be truncating you must be truncating they must be truncating
Perfect
I must have truncated you must have truncated she must have truncated we must have truncated you must have truncated they must have truncated
V-ing perfect
I must have been truncating you must have been truncating she must have been truncating we must have been truncating you must have been truncating they must have been truncating
Negation
Simple form
I mustn't truncate you mustn't truncate she mustn't truncate we mustn't truncate you mustn't truncate they mustn't truncate
V-ing form
I mustn't be truncating you mustn't be truncating she mustn't be truncating we mustn't be truncating you mustn't be truncating they mustn't be truncating
Perfect
I mustn't have truncated you mustn't have truncated she mustn't have truncated we mustn't have truncated you mustn't have truncated they mustn't have truncated
V-ing perfect
I mustn't have been truncating you mustn't have been truncating she mustn't have been truncating we mustn't have been truncating you mustn't have been truncating they mustn't have been truncating
Interrogative form
Simple form
must I truncate? must you truncate? must she truncate? must we truncate? must you truncate? must they truncate?
V-ing form
must I be truncating? must you be truncating? must she be truncating? must we be truncating? must you be truncating? must they be truncating?
Perfect
must I have truncated? must you have truncated? must she have truncated? must we have truncated? must you have truncated? must they have truncated?
V-ing perfect
must I have been truncating? must you have been truncating? must she have been truncating? must we have been truncating? must you have been truncating? must they have been truncating?
Interro-negative form
Simple form
mustn't I truncate? mustn't you truncate? mustn't she truncate? mustn't we truncate? mustn't you truncate? mustn't they truncate?
V-ing form
mustn't I be truncating? mustn't you be truncating? mustn't she be truncating? mustn't we be truncating? mustn't you be truncating? mustn't they be truncating?
Perfect
mustn't I have truncated? mustn't you have truncated? mustn't she have truncated? mustn't we have truncated? mustn't you have truncated? mustn't they have truncated?
V-ing perfect
mustn't I have been truncating? mustn't you have been truncating? mustn't she have been truncating? mustn't we have been truncating? mustn't you have been truncating? mustn't they have been truncating?