English verb conjugation
MUST OVERTIGHTEN

Regular verb: overtighten - overtightened - overtightened

Affirmation

Simple form	V-ing form
I must overtighten you must overtighten he must overtighten we must overtighten you must overtighten they must overtighten	I must be overtightening you must be overtightening he must be overtightening we must be overtightening you must be overtightening they must be overtightening
Perfect	V-ing perfect
I must have overtightened you must have overtightened he must have overtightened we must have overtightened you must have overtightened they must have overtightened	I must have been overtightening you must have been overtightening he must have been overtightening we must have been overtightening you must have been overtightening they must have been overtightening

Negation

Simple form	V-ing form
I must not overtighten you must not overtighten he must not overtighten we must not overtighten you must not overtighten they must not overtighten	I must not be overtightening you must not be overtightening he must not be overtightening we must not be overtightening you must not be overtightening they must not be overtightening
Perfect	V-ing perfect
I must not have overtightened you must not have overtightened he must not have overtightened we must not have overtightened you must not have overtightened they must not have overtightened	I must not have been overtightening you must not have been overtightening he must not have been overtightening we must not have been overtightening you must not have been overtightening they must not have been overtightening

Interrogative form

Simple form	V-ing form
must I overtighten? must you overtighten? must he overtighten? must we overtighten? must you overtighten? must they overtighten?	must I be overtightening? must you be overtightening? must he be overtightening? must we be overtightening? must you be overtightening? must they be overtightening?
Perfect	V-ing perfect
must I have overtightened? must you have overtightened? must he have overtightened? must we have overtightened? must you have overtightened? must they have overtightened?	must I have been overtightening? must you have been overtightening? must he have been overtightening? must we have been overtightening? must you have been overtightening? must they have been overtightening?

Interro-negative form

Simple form	V-ing form
must I not overtighten? must you not overtighten? must he not overtighten? must we not overtighten? must you not overtighten? must they not overtighten?	must I not be overtightening? must you not be overtightening? must he not be overtightening? must we not be overtightening? must you not be overtightening? must they not be overtightening?
Perfect	V-ing perfect
must I not have overtightened? must you not have overtightened? must he not have overtightened? must we not have overtightened? must you not have overtightened? must they not have overtightened?	must I not have been overtightening? must you not have been overtightening? must he not have been overtightening? must we not have been overtightening? must you not have been overtightening? must they not have been overtightening?