English verb conjugation
MUST RIGHTEN

Regular verb: righten - rightened - rightened

Affirmation

Simple form	V-ing form
I must righten you must righten he must righten we must righten you must righten they must righten	I must be rightening you must be rightening he must be rightening we must be rightening you must be rightening they must be rightening
Perfect	V-ing perfect
I must have rightened you must have rightened he must have rightened we must have rightened you must have rightened they must have rightened	I must have been rightening you must have been rightening he must have been rightening we must have been rightening you must have been rightening they must have been rightening

Negation

Simple form	V-ing form
I must not righten you must not righten he must not righten we must not righten you must not righten they must not righten	I must not be rightening you must not be rightening he must not be rightening we must not be rightening you must not be rightening they must not be rightening
Perfect	V-ing perfect
I must not have rightened you must not have rightened he must not have rightened we must not have rightened you must not have rightened they must not have rightened	I must not have been rightening you must not have been rightening he must not have been rightening we must not have been rightening you must not have been rightening they must not have been rightening

Interrogative form

Simple form	V-ing form
must I righten? must you righten? must he righten? must we righten? must you righten? must they righten?	must I be rightening? must you be rightening? must he be rightening? must we be rightening? must you be rightening? must they be rightening?
Perfect	V-ing perfect
must I have rightened? must you have rightened? must he have rightened? must we have rightened? must you have rightened? must they have rightened?	must I have been rightening? must you have been rightening? must he have been rightening? must we have been rightening? must you have been rightening? must they have been rightening?

Interro-negative form

Simple form	V-ing form
must I not righten? must you not righten? must he not righten? must we not righten? must you not righten? must they not righten?	must I not be rightening? must you not be rightening? must he not be rightening? must we not be rightening? must you not be rightening? must they not be rightening?
Perfect	V-ing perfect
must I not have rightened? must you not have rightened? must he not have rightened? must we not have rightened? must you not have rightened? must they not have rightened?	must I not have been rightening? must you not have been rightening? must he not have been rightening? must we not have been rightening? must you not have been rightening? must they not have been rightening?