I must disable you must disable he must disable we must disable you must disable they must disable
V-ing form
I must be disabling you must be disabling he must be disabling we must be disabling you must be disabling they must be disabling
Perfect
I must have disabled you must have disabled he must have disabled we must have disabled you must have disabled they must have disabled
V-ing perfect
I must have been disabling you must have been disabling he must have been disabling we must have been disabling you must have been disabling they must have been disabling
Negation
Simple form
I must not disable you must not disable he must not disable we must not disable you must not disable they must not disable
V-ing form
I must not be disabling you must not be disabling he must not be disabling we must not be disabling you must not be disabling they must not be disabling
Perfect
I must not have disabled you must not have disabled he must not have disabled we must not have disabled you must not have disabled they must not have disabled
V-ing perfect
I must not have been disabling you must not have been disabling he must not have been disabling we must not have been disabling you must not have been disabling they must not have been disabling
Interrogative form
Simple form
must I disable? must you disable? must he disable? must we disable? must you disable? must they disable?
V-ing form
must I be disabling? must you be disabling? must he be disabling? must we be disabling? must you be disabling? must they be disabling?
Perfect
must I have disabled? must you have disabled? must he have disabled? must we have disabled? must you have disabled? must they have disabled?
V-ing perfect
must I have been disabling? must you have been disabling? must he have been disabling? must we have been disabling? must you have been disabling? must they have been disabling?
Interro-negative form
Simple form
must I not disable? must you not disable? must he not disable? must we not disable? must you not disable? must they not disable?
V-ing form
must I not be disabling? must you not be disabling? must he not be disabling? must we not be disabling? must you not be disabling? must they not be disabling?
Perfect
must I not have disabled? must you not have disabled? must he not have disabled? must we not have disabled? must you not have disabled? must they not have disabled?
V-ing perfect
must I not have been disabling? must you not have been disabling? must he not have been disabling? must we not have been disabling? must you not have been disabling? must they not have been disabling?