English verb conjugation
MUST FEAR

Regular verb: fear - feared - feared

Affirmation

Simple form	V-ing form
I must fear you must fear he must fear we must fear you must fear they must fear	I must be fearing you must be fearing he must be fearing we must be fearing you must be fearing they must be fearing
Perfect	V-ing perfect
I must have feared you must have feared he must have feared we must have feared you must have feared they must have feared	I must have been fearing you must have been fearing he must have been fearing we must have been fearing you must have been fearing they must have been fearing

Negation

Simple form	V-ing form
I must not fear you must not fear he must not fear we must not fear you must not fear they must not fear	I must not be fearing you must not be fearing he must not be fearing we must not be fearing you must not be fearing they must not be fearing
Perfect	V-ing perfect
I must not have feared you must not have feared he must not have feared we must not have feared you must not have feared they must not have feared	I must not have been fearing you must not have been fearing he must not have been fearing we must not have been fearing you must not have been fearing they must not have been fearing

Interrogative form

Simple form	V-ing form
must I fear? must you fear? must he fear? must we fear? must you fear? must they fear?	must I be fearing? must you be fearing? must he be fearing? must we be fearing? must you be fearing? must they be fearing?
Perfect	V-ing perfect
must I have feared? must you have feared? must he have feared? must we have feared? must you have feared? must they have feared?	must I have been fearing? must you have been fearing? must he have been fearing? must we have been fearing? must you have been fearing? must they have been fearing?

Interro-negative form

Simple form	V-ing form
must I not fear? must you not fear? must he not fear? must we not fear? must you not fear? must they not fear?	must I not be fearing? must you not be fearing? must he not be fearing? must we not be fearing? must you not be fearing? must they not be fearing?
Perfect	V-ing perfect
must I not have feared? must you not have feared? must he not have feared? must we not have feared? must you not have feared? must they not have feared?	must I not have been fearing? must you not have been fearing? must he not have been fearing? must we not have been fearing? must you not have been fearing? must they not have been fearing?