I must obturate you must obturate he must obturate we must obturate you must obturate they must obturate
V-ing form
I must be obturating you must be obturating he must be obturating we must be obturating you must be obturating they must be obturating
Perfect
I must have obturated you must have obturated he must have obturated we must have obturated you must have obturated they must have obturated
V-ing perfect
I must have been obturating you must have been obturating he must have been obturating we must have been obturating you must have been obturating they must have been obturating
Negation
Simple form
I must not obturate you must not obturate he must not obturate we must not obturate you must not obturate they must not obturate
V-ing form
I must not be obturating you must not be obturating he must not be obturating we must not be obturating you must not be obturating they must not be obturating
Perfect
I must not have obturated you must not have obturated he must not have obturated we must not have obturated you must not have obturated they must not have obturated
V-ing perfect
I must not have been obturating you must not have been obturating he must not have been obturating we must not have been obturating you must not have been obturating they must not have been obturating
Interrogative form
Simple form
must I obturate? must you obturate? must he obturate? must we obturate? must you obturate? must they obturate?
V-ing form
must I be obturating? must you be obturating? must he be obturating? must we be obturating? must you be obturating? must they be obturating?
Perfect
must I have obturated? must you have obturated? must he have obturated? must we have obturated? must you have obturated? must they have obturated?
V-ing perfect
must I have been obturating? must you have been obturating? must he have been obturating? must we have been obturating? must you have been obturating? must they have been obturating?
Interro-negative form
Simple form
must I not obturate? must you not obturate? must he not obturate? must we not obturate? must you not obturate? must they not obturate?
V-ing form
must I not be obturating? must you not be obturating? must he not be obturating? must we not be obturating? must you not be obturating? must they not be obturating?
Perfect
must I not have obturated? must you not have obturated? must he not have obturated? must we not have obturated? must you not have obturated? must they not have obturated?
V-ing perfect
must I not have been obturating? must you not have been obturating? must he not have been obturating? must we not have been obturating? must you not have been obturating? must they not have been obturating?