English verb conjugation
MUST REASON

Regular verb: reason - reasoned - reasoned

Affirmation

Simple form	V-ing form
I must reason you must reason she must reason we must reason you must reason they must reason	I must be reasoning you must be reasoning she must be reasoning we must be reasoning you must be reasoning they must be reasoning
Perfect	V-ing perfect
I must have reasoned you must have reasoned she must have reasoned we must have reasoned you must have reasoned they must have reasoned	I must have been reasoning you must have been reasoning she must have been reasoning we must have been reasoning you must have been reasoning they must have been reasoning

Negation

Simple form	V-ing form
I must not reason you must not reason she must not reason we must not reason you must not reason they must not reason	I must not be reasoning you must not be reasoning she must not be reasoning we must not be reasoning you must not be reasoning they must not be reasoning
Perfect	V-ing perfect
I must not have reasoned you must not have reasoned she must not have reasoned we must not have reasoned you must not have reasoned they must not have reasoned	I must not have been reasoning you must not have been reasoning she must not have been reasoning we must not have been reasoning you must not have been reasoning they must not have been reasoning

Interrogative form

Simple form	V-ing form
must I reason? must you reason? must she reason? must we reason? must you reason? must they reason?	must I be reasoning? must you be reasoning? must she be reasoning? must we be reasoning? must you be reasoning? must they be reasoning?
Perfect	V-ing perfect
must I have reasoned? must you have reasoned? must she have reasoned? must we have reasoned? must you have reasoned? must they have reasoned?	must I have been reasoning? must you have been reasoning? must she have been reasoning? must we have been reasoning? must you have been reasoning? must they have been reasoning?

Interro-negative form

Simple form	V-ing form
must I not reason? must you not reason? must she not reason? must we not reason? must you not reason? must they not reason?	must I not be reasoning? must you not be reasoning? must she not be reasoning? must we not be reasoning? must you not be reasoning? must they not be reasoning?
Perfect	V-ing perfect
must I not have reasoned? must you not have reasoned? must she not have reasoned? must we not have reasoned? must you not have reasoned? must they not have reasoned?	must I not have been reasoning? must you not have been reasoning? must she not have been reasoning? must we not have been reasoning? must you not have been reasoning? must they not have been reasoning?