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 mustn't upright you mustn't upright he mustn't upright we mustn't upright you mustn't upright they mustn't upright	I mustn't be uprighting you mustn't be uprighting he mustn't be uprighting we mustn't be uprighting you mustn't be uprighting they mustn't be uprighting
Perfect	V-ing perfect
I mustn't have uprighted you mustn't have uprighted he mustn't have uprighted we mustn't have uprighted you mustn't have uprighted they mustn't have uprighted	I mustn't have been uprighting you mustn't have been uprighting he mustn't have been uprighting we mustn't have been uprighting you mustn't have been uprighting they mustn't 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
mustn't I upright? mustn't you upright? mustn't he upright? mustn't we upright? mustn't you upright? mustn't they upright?	mustn't I be uprighting? mustn't you be uprighting? mustn't he be uprighting? mustn't we be uprighting? mustn't you be uprighting? mustn't they be uprighting?
Perfect	V-ing perfect
mustn't I have uprighted? mustn't you have uprighted? mustn't he have uprighted? mustn't we have uprighted? mustn't you have uprighted? mustn't they have uprighted?	mustn't I have been uprighting? mustn't you have been uprighting? mustn't he have been uprighting? mustn't we have been uprighting? mustn't you have been uprighting? mustn't they have been uprighting?