I must eclipse you must eclipse he must eclipse we must eclipse you must eclipse they must eclipse
V-ing form
I must be eclipsing you must be eclipsing he must be eclipsing we must be eclipsing you must be eclipsing they must be eclipsing
Perfect
I must have eclipsed you must have eclipsed he must have eclipsed we must have eclipsed you must have eclipsed they must have eclipsed
V-ing perfect
I must have been eclipsing you must have been eclipsing he must have been eclipsing we must have been eclipsing you must have been eclipsing they must have been eclipsing
Negation
Simple form
I mustn't eclipse you mustn't eclipse he mustn't eclipse we mustn't eclipse you mustn't eclipse they mustn't eclipse
V-ing form
I mustn't be eclipsing you mustn't be eclipsing he mustn't be eclipsing we mustn't be eclipsing you mustn't be eclipsing they mustn't be eclipsing
Perfect
I mustn't have eclipsed you mustn't have eclipsed he mustn't have eclipsed we mustn't have eclipsed you mustn't have eclipsed they mustn't have eclipsed
V-ing perfect
I mustn't have been eclipsing you mustn't have been eclipsing he mustn't have been eclipsing we mustn't have been eclipsing you mustn't have been eclipsing they mustn't have been eclipsing
Interrogative form
Simple form
must I eclipse? must you eclipse? must he eclipse? must we eclipse? must you eclipse? must they eclipse?
V-ing form
must I be eclipsing? must you be eclipsing? must he be eclipsing? must we be eclipsing? must you be eclipsing? must they be eclipsing?
Perfect
must I have eclipsed? must you have eclipsed? must he have eclipsed? must we have eclipsed? must you have eclipsed? must they have eclipsed?
V-ing perfect
must I have been eclipsing? must you have been eclipsing? must he have been eclipsing? must we have been eclipsing? must you have been eclipsing? must they have been eclipsing?
Interro-negative form
Simple form
mustn't I eclipse? mustn't you eclipse? mustn't he eclipse? mustn't we eclipse? mustn't you eclipse? mustn't they eclipse?
V-ing form
mustn't I be eclipsing? mustn't you be eclipsing? mustn't he be eclipsing? mustn't we be eclipsing? mustn't you be eclipsing? mustn't they be eclipsing?
Perfect
mustn't I have eclipsed? mustn't you have eclipsed? mustn't he have eclipsed? mustn't we have eclipsed? mustn't you have eclipsed? mustn't they have eclipsed?
V-ing perfect
mustn't I have been eclipsing? mustn't you have been eclipsing? mustn't he have been eclipsing? mustn't we have been eclipsing? mustn't you have been eclipsing? mustn't they have been eclipsing?