English verb conjugation
MUST UPRIGHT

Regular verb: upright - uprighted - uprighted

Affirmation

Simple form	V-ing form
I must upright you must upright he must upright we must upright you must upright they must upright	I must be uprighting you must be uprighting he must be uprighting we must be uprighting you must be uprighting they must be uprighting
Perfect	V-ing perfect
I must have uprighted you must have uprighted he must have uprighted we must have uprighted you must have uprighted they must have uprighted	I must have been uprighting you must have been uprighting he must have been uprighting we must have been uprighting you must have been uprighting they must have been uprighting

Negation

Simple form	V-ing form
I must not upright you must not upright he must not upright we must not upright you must not upright they must not upright	I must not be uprighting you must not be uprighting he must not be uprighting we must not be uprighting you must not be uprighting they must not be uprighting
Perfect	V-ing perfect
I must not have uprighted you must not have uprighted he must not have uprighted we must not have uprighted you must not have uprighted they must not have uprighted	I must not have been uprighting you must not have been uprighting he must not have been uprighting we must not have been uprighting you must not have been uprighting they must not have been uprighting

Interrogative form

Simple form	V-ing form
must I upright? must you upright? must he upright? must we upright? must you upright? must they upright?	must I be uprighting? must you be uprighting? must he be uprighting? must we be uprighting? must you be uprighting? must they be uprighting?
Perfect	V-ing perfect
must I have uprighted? must you have uprighted? must he have uprighted? must we have uprighted? must you have uprighted? must they have uprighted?	must I have been uprighting? must you have been uprighting? must he have been uprighting? must we have been uprighting? must you have been uprighting? must they have been uprighting?

Interro-negative form

Simple form	V-ing form
must I not upright? must you not upright? must he not upright? must we not upright? must you not upright? must they not upright?	must I not be uprighting? must you not be uprighting? must he not be uprighting? must we not be uprighting? must you not be uprighting? must they not be uprighting?
Perfect	V-ing perfect
must I not have uprighted? must you not have uprighted? must he not have uprighted? must we not have uprighted? must you not have uprighted? must they not have uprighted?	must I not have been uprighting? must you not have been uprighting? must he not have been uprighting? must we not have been uprighting? must you not have been uprighting? must they not have been uprighting?