English verb conjugation
MUST FEAR

Regular verb: fear - feared - feared

Affirmation

Simple form	V-ing form
I must fear you must fear she must fear we must fear you must fear they must fear	I must be fearing you must be fearing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she fear? must we fear? must you fear? must they fear?	must I be fearing? must you be fearing? must she 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 she 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 she 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 she 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 she 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 she 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 she not have been fearing? must we not have been fearing? must you not have been fearing? must they not have been fearing?