I must rule you must rule he must rule we must rule you must rule they must rule
V-ing form
I must be ruling you must be ruling he must be ruling we must be ruling you must be ruling they must be ruling
Perfect
I must have ruled you must have ruled he must have ruled we must have ruled you must have ruled they must have ruled
V-ing perfect
I must have been ruling you must have been ruling he must have been ruling we must have been ruling you must have been ruling they must have been ruling
Negation
Simple form
I must not rule you must not rule he must not rule we must not rule you must not rule they must not rule
V-ing form
I must not be ruling you must not be ruling he must not be ruling we must not be ruling you must not be ruling they must not be ruling
Perfect
I must not have ruled you must not have ruled he must not have ruled we must not have ruled you must not have ruled they must not have ruled
V-ing perfect
I must not have been ruling you must not have been ruling he must not have been ruling we must not have been ruling you must not have been ruling they must not have been ruling
Interrogative form
Simple form
must I rule? must you rule? must he rule? must we rule? must you rule? must they rule?
V-ing form
must I be ruling? must you be ruling? must he be ruling? must we be ruling? must you be ruling? must they be ruling?
Perfect
must I have ruled? must you have ruled? must he have ruled? must we have ruled? must you have ruled? must they have ruled?
V-ing perfect
must I have been ruling? must you have been ruling? must he have been ruling? must we have been ruling? must you have been ruling? must they have been ruling?
Interro-negative form
Simple form
must I not rule? must you not rule? must he not rule? must we not rule? must you not rule? must they not rule?
V-ing form
must I not be ruling? must you not be ruling? must he not be ruling? must we not be ruling? must you not be ruling? must they not be ruling?
Perfect
must I not have ruled? must you not have ruled? must he not have ruled? must we not have ruled? must you not have ruled? must they not have ruled?
V-ing perfect
must I not have been ruling? must you not have been ruling? must he not have been ruling? must we not have been ruling? must you not have been ruling? must they not have been ruling?