I must breach you must breach he must breach we must breach you must breach they must breach
V-ing form
I must be breaching you must be breaching he must be breaching we must be breaching you must be breaching they must be breaching
Perfect
I must have breached you must have breached he must have breached we must have breached you must have breached they must have breached
V-ing perfect
I must have been breaching you must have been breaching he must have been breaching we must have been breaching you must have been breaching they must have been breaching
Negation
Simple form
I must not breach you must not breach he must not breach we must not breach you must not breach they must not breach
V-ing form
I must not be breaching you must not be breaching he must not be breaching we must not be breaching you must not be breaching they must not be breaching
Perfect
I must not have breached you must not have breached he must not have breached we must not have breached you must not have breached they must not have breached
V-ing perfect
I must not have been breaching you must not have been breaching he must not have been breaching we must not have been breaching you must not have been breaching they must not have been breaching
Interrogative form
Simple form
must I breach? must you breach? must he breach? must we breach? must you breach? must they breach?
V-ing form
must I be breaching? must you be breaching? must he be breaching? must we be breaching? must you be breaching? must they be breaching?
Perfect
must I have breached? must you have breached? must he have breached? must we have breached? must you have breached? must they have breached?
V-ing perfect
must I have been breaching? must you have been breaching? must he have been breaching? must we have been breaching? must you have been breaching? must they have been breaching?
Interro-negative form
Simple form
must I not breach? must you not breach? must he not breach? must we not breach? must you not breach? must they not breach?
V-ing form
must I not be breaching? must you not be breaching? must he not be breaching? must we not be breaching? must you not be breaching? must they not be breaching?
Perfect
must I not have breached? must you not have breached? must he not have breached? must we not have breached? must you not have breached? must they not have breached?
V-ing perfect
must I not have been breaching? must you not have been breaching? must he not have been breaching? must we not have been breaching? must you not have been breaching? must they not have been breaching?