I must enure you must enure he must enure we must enure you must enure they must enure
V-ing form
I must be enuring you must be enuring he must be enuring we must be enuring you must be enuring they must be enuring
Perfect
I must have enured you must have enured he must have enured we must have enured you must have enured they must have enured
V-ing perfect
I must have been enuring you must have been enuring he must have been enuring we must have been enuring you must have been enuring they must have been enuring
Negation
Simple form
I must not enure you must not enure he must not enure we must not enure you must not enure they must not enure
V-ing form
I must not be enuring you must not be enuring he must not be enuring we must not be enuring you must not be enuring they must not be enuring
Perfect
I must not have enured you must not have enured he must not have enured we must not have enured you must not have enured they must not have enured
V-ing perfect
I must not have been enuring you must not have been enuring he must not have been enuring we must not have been enuring you must not have been enuring they must not have been enuring
Interrogative form
Simple form
must I enure? must you enure? must he enure? must we enure? must you enure? must they enure?
V-ing form
must I be enuring? must you be enuring? must he be enuring? must we be enuring? must you be enuring? must they be enuring?
Perfect
must I have enured? must you have enured? must he have enured? must we have enured? must you have enured? must they have enured?
V-ing perfect
must I have been enuring? must you have been enuring? must he have been enuring? must we have been enuring? must you have been enuring? must they have been enuring?
Interro-negative form
Simple form
must I not enure? must you not enure? must he not enure? must we not enure? must you not enure? must they not enure?
V-ing form
must I not be enuring? must you not be enuring? must he not be enuring? must we not be enuring? must you not be enuring? must they not be enuring?
Perfect
must I not have enured? must you not have enured? must he not have enured? must we not have enured? must you not have enured? must they not have enured?
V-ing perfect
must I not have been enuring? must you not have been enuring? must he not have been enuring? must we not have been enuring? must you not have been enuring? must they not have been enuring?