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