I must double-cross you must double-cross she must double-cross we must double-cross you must double-cross they must double-cross
Forme en V-ing
I must be double-crossing you must be double-crossing she must be double-crossing we must be double-crossing you must be double-crossing they must be double-crossing
Perfect
I must have double-crossed you must have double-crossed she must have double-crossed we must have double-crossed you must have double-crossed they must have double-crossed
Perfect en V-ing
I must have been double-crossing you must have been double-crossing she must have been double-crossing we must have been double-crossing you must have been double-crossing they must have been double-crossing
Négation
Forme simple
I mustn't double-cross you mustn't double-cross she mustn't double-cross we mustn't double-cross you mustn't double-cross they mustn't double-cross
Forme en V-ing
I mustn't be double-crossing you mustn't be double-crossing she mustn't be double-crossing we mustn't be double-crossing you mustn't be double-crossing they mustn't be double-crossing
Perfect
I mustn't have double-crossed you mustn't have double-crossed she mustn't have double-crossed we mustn't have double-crossed you mustn't have double-crossed they mustn't have double-crossed
Perfect en V-ing
I mustn't have been double-crossing you mustn't have been double-crossing she mustn't have been double-crossing we mustn't have been double-crossing you mustn't have been double-crossing they mustn't have been double-crossing
Forme interrogative
Forme simple
must I double-cross? must you double-cross? must she double-cross? must we double-cross? must you double-cross? must they double-cross?
Forme en V-ing
must I be double-crossing? must you be double-crossing? must she be double-crossing? must we be double-crossing? must you be double-crossing? must they be double-crossing?
Perfect
must I have double-crossed? must you have double-crossed? must she have double-crossed? must we have double-crossed? must you have double-crossed? must they have double-crossed?
Perfect en V-ing
must I have been double-crossing? must you have been double-crossing? must she have been double-crossing? must we have been double-crossing? must you have been double-crossing? must they have been double-crossing?
Forme interro-négative
Forme simple
mustn't I double-cross? mustn't you double-cross? mustn't she double-cross? mustn't we double-cross? mustn't you double-cross? mustn't they double-cross?
Forme en V-ing
mustn't I be double-crossing? mustn't you be double-crossing? mustn't she be double-crossing? mustn't we be double-crossing? mustn't you be double-crossing? mustn't they be double-crossing?
Perfect
mustn't I have double-crossed? mustn't you have double-crossed? mustn't she have double-crossed? mustn't we have double-crossed? mustn't you have double-crossed? mustn't they have double-crossed?
Perfect en V-ing
mustn't I have been double-crossing? mustn't you have been double-crossing? mustn't she have been double-crossing? mustn't we have been double-crossing? mustn't you have been double-crossing? mustn't they have been double-crossing?