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