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