I must pour you must pour he must pour we must pour you must pour they must pour
V-ing form
I must be pouring you must be pouring he must be pouring we must be pouring you must be pouring they must be pouring
Perfect
I must have poured you must have poured he must have poured we must have poured you must have poured they must have poured
V-ing perfect
I must have been pouring you must have been pouring he must have been pouring we must have been pouring you must have been pouring they must have been pouring
Negation
Simple form
I must not pour you must not pour he must not pour we must not pour you must not pour they must not pour
V-ing form
I must not be pouring you must not be pouring he must not be pouring we must not be pouring you must not be pouring they must not be pouring
Perfect
I must not have poured you must not have poured he must not have poured we must not have poured you must not have poured they must not have poured
V-ing perfect
I must not have been pouring you must not have been pouring he must not have been pouring we must not have been pouring you must not have been pouring they must not have been pouring
Interrogative form
Simple form
must I pour? must you pour? must he pour? must we pour? must you pour? must they pour?
V-ing form
must I be pouring? must you be pouring? must he be pouring? must we be pouring? must you be pouring? must they be pouring?
Perfect
must I have poured? must you have poured? must he have poured? must we have poured? must you have poured? must they have poured?
V-ing perfect
must I have been pouring? must you have been pouring? must he have been pouring? must we have been pouring? must you have been pouring? must they have been pouring?
Interro-negative form
Simple form
must I not pour? must you not pour? must he not pour? must we not pour? must you not pour? must they not pour?
V-ing form
must I not be pouring? must you not be pouring? must he not be pouring? must we not be pouring? must you not be pouring? must they not be pouring?
Perfect
must I not have poured? must you not have poured? must he not have poured? must we not have poured? must you not have poured? must they not have poured?
V-ing perfect
must I not have been pouring? must you not have been pouring? must he not have been pouring? must we not have been pouring? must you not have been pouring? must they not have been pouring?