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 mustn't reason you mustn't reason she mustn't reason we mustn't reason you mustn't reason they mustn't reason	I mustn't be reasoning you mustn't be reasoning she mustn't be reasoning we mustn't be reasoning you mustn't be reasoning they mustn't be reasoning
Perfect	V-ing perfect
I mustn't have reasoned you mustn't have reasoned she mustn't have reasoned we mustn't have reasoned you mustn't have reasoned they mustn't have reasoned	I mustn't have been reasoning you mustn't have been reasoning she mustn't have been reasoning we mustn't have been reasoning you mustn't have been reasoning they mustn't 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
mustn't I reason? mustn't you reason? mustn't she reason? mustn't we reason? mustn't you reason? mustn't they reason?	mustn't I be reasoning? mustn't you be reasoning? mustn't she be reasoning? mustn't we be reasoning? mustn't you be reasoning? mustn't they be reasoning?
Perfect	V-ing perfect
mustn't I have reasoned? mustn't you have reasoned? mustn't she have reasoned? mustn't we have reasoned? mustn't you have reasoned? mustn't they have reasoned?	mustn't I have been reasoning? mustn't you have been reasoning? mustn't she have been reasoning? mustn't we have been reasoning? mustn't you have been reasoning? mustn't they have been reasoning?