English verb conjugation
MUST SIGHT

Regular verb: sight - sighted - sighted

Affirmation

Simple form	V-ing form
I must sight you must sight she must sight we must sight you must sight they must sight	I must be sighting you must be sighting she must be sighting we must be sighting you must be sighting they must be sighting
Perfect	V-ing perfect
I must have sighted you must have sighted she must have sighted we must have sighted you must have sighted they must have sighted	I must have been sighting you must have been sighting she must have been sighting we must have been sighting you must have been sighting they must have been sighting

Negation

Simple form	V-ing form
I must not sight you must not sight she must not sight we must not sight you must not sight they must not sight	I must not be sighting you must not be sighting she must not be sighting we must not be sighting you must not be sighting they must not be sighting
Perfect	V-ing perfect
I must not have sighted you must not have sighted she must not have sighted we must not have sighted you must not have sighted they must not have sighted	I must not have been sighting you must not have been sighting she must not have been sighting we must not have been sighting you must not have been sighting they must not have been sighting

Interrogative form

Simple form	V-ing form
must I sight? must you sight? must she sight? must we sight? must you sight? must they sight?	must I be sighting? must you be sighting? must she be sighting? must we be sighting? must you be sighting? must they be sighting?
Perfect	V-ing perfect
must I have sighted? must you have sighted? must she have sighted? must we have sighted? must you have sighted? must they have sighted?	must I have been sighting? must you have been sighting? must she have been sighting? must we have been sighting? must you have been sighting? must they have been sighting?

Interro-negative form

Simple form	V-ing form
must I not sight? must you not sight? must she not sight? must we not sight? must you not sight? must they not sight?	must I not be sighting? must you not be sighting? must she not be sighting? must we not be sighting? must you not be sighting? must they not be sighting?
Perfect	V-ing perfect
must I not have sighted? must you not have sighted? must she not have sighted? must we not have sighted? must you not have sighted? must they not have sighted?	must I not have been sighting? must you not have been sighting? must she not have been sighting? must we not have been sighting? must you not have been sighting? must they not have been sighting?