must double-space
Verbe régulier : double-space - double-spaced- double-spaced

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must double-space
you must double-space
she must double-space
we must double-space
you must double-space
they must double-space 	I must be double-spacing
you must be double-spacing
she must be double-spacing
we must be double-spacing
you must be double-spacing
they must be double-spacing	I must have double-spaced
you must have double-spaced
she must have double-spaced
we must have double-spaced
you must have double-spaced
they must have double-spaced	I must have been double-spacing
you must have been double-spacing
she must have been double-spacing
we must have been double-spacing
you must have been double-spacing
they must have been double-spacing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not double-space
you must not double-space
she must not double-space
we must not double-space
you must not double-space
they must not double-space 	I must not be double-spacing
you must not be double-spacing
she must not be double-spacing
we must not be double-spacing
you must not be double-spacing
they must not be double-spacing	I must not have double-spaced
you must not have double-spaced
she must not have double-spaced
we must not have double-spaced
you must not have double-spaced
they must not have double-spaced	I must not have been double-spacing
you must not have been double-spacing
she must not have been double-spacing
we must not have been double-spacing
you must not have been double-spacing
they must not have been double-spacing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I double-space?
must you double-space?
must she double-space?
must we double-space?
must you double-space?
must they double-space? 	must I be double-spacing?
must you be double-spacing?
must she be double-spacing?
must we be double-spacing?
must you be double-spacing?
must they be double-spacing? 	must I have double-spaced?
must you have double-spaced?
must she have double-spaced?
must we have double-spaced?
must you have double-spaced?
must they have double-spaced? 	must I have been double-spacing?
must you have been double-spacing?
must she have been double-spacing?
must we have been double-spacing?
must you have been double-spacing?
must they have been double-spacing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not double-space?
must you not double-space?
must she not double-space?
must we not double-space?
must you not double-space?
must they not double-space? 	must I not be double-spacing?
must you not be double-spacing?
must she not be double-spacing?
must we not be double-spacing?
must you not be double-spacing?
must they not be double-spacing? 	must I not have double-spaced?
must you not have double-spaced?
must she not have double-spaced?
must we not have double-spaced?
must you not have double-spaced?
must they not have double-spaced? 	must I not have been double-spacing?
must you not have been double-spacing?
must she not have been double-spacing?
must we not have been double-spacing?
must you not have been double-spacing?
must they not have been double-spacing?