must detach
Regular verb: detach - detached- detached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must detach
you must detach
she must detach
we must detach
you must detach
they must detach 	I must be detaching
you must be detaching
she must be detaching
we must be detaching
you must be detaching
they must be detaching	I must have detached
you must have detached
she must have detached
we must have detached
you must have detached
they must have detached	I must have been detaching
you must have been detaching
she must have been detaching
we must have been detaching
you must have been detaching
they must have been detaching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not detach
you must not detach
she must not detach
we must not detach
you must not detach
they must not detach 	I must not be detaching
you must not be detaching
she must not be detaching
we must not be detaching
you must not be detaching
they must not be detaching	I must not have detached
you must not have detached
she must not have detached
we must not have detached
you must not have detached
they must not have detached	I must not have been detaching
you must not have been detaching
she must not have been detaching
we must not have been detaching
you must not have been detaching
they must not have been detaching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I detach?
must you detach?
must she detach?
must we detach?
must you detach?
must they detach? 	must I be detaching?
must you be detaching?
must she be detaching?
must we be detaching?
must you be detaching?
must they be detaching? 	must I have detached?
must you have detached?
must she have detached?
must we have detached?
must you have detached?
must they have detached? 	must I have been detaching?
must you have been detaching?
must she have been detaching?
must we have been detaching?
must you have been detaching?
must they have been detaching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not detach?
must you not detach?
must she not detach?
must we not detach?
must you not detach?
must they not detach? 	must I not be detaching?
must you not be detaching?
must she not be detaching?
must we not be detaching?
must you not be detaching?
must they not be detaching? 	must I not have detached?
must you not have detached?
must she not have detached?
must we not have detached?
must you not have detached?
must they not have detached? 	must I not have been detaching?
must you not have been detaching?
must she not have been detaching?
must we not have been detaching?
must you not have been detaching?
must they not have been detaching?