Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must celerra you must celerra he must celerra we must celerra you must celerra they must celerra
V-ing form
I must be celerraing you must be celerraing he must be celerraing we must be celerraing you must be celerraing they must be celerraing
Perfect
I must have celerraed you must have celerraed he must have celerraed we must have celerraed you must have celerraed they must have celerraed
V-ing perfect
I must have been celerraing you must have been celerraing he must have been celerraing we must have been celerraing you must have been celerraing they must have been celerraing
Negation
Simple form
I must not celerra you must not celerra he must not celerra we must not celerra you must not celerra they must not celerra
V-ing form
I must not be celerraing you must not be celerraing he must not be celerraing we must not be celerraing you must not be celerraing they must not be celerraing
Perfect
I must not have celerraed you must not have celerraed he must not have celerraed we must not have celerraed you must not have celerraed they must not have celerraed
V-ing perfect
I must not have been celerraing you must not have been celerraing he must not have been celerraing we must not have been celerraing you must not have been celerraing they must not have been celerraing
Interrogative form
Simple form
must I celerra? must you celerra? must he celerra? must we celerra? must you celerra? must they celerra?
V-ing form
must I be celerraing? must you be celerraing? must he be celerraing? must we be celerraing? must you be celerraing? must they be celerraing?
Perfect
must I have celerraed? must you have celerraed? must he have celerraed? must we have celerraed? must you have celerraed? must they have celerraed?
V-ing perfect
must I have been celerraing? must you have been celerraing? must he have been celerraing? must we have been celerraing? must you have been celerraing? must they have been celerraing?
Interro-negative form
Simple form
must I not celerra? must you not celerra? must he not celerra? must we not celerra? must you not celerra? must they not celerra?
V-ing form
must I not be celerraing? must you not be celerraing? must he not be celerraing? must we not be celerraing? must you not be celerraing? must they not be celerraing?
Perfect
must I not have celerraed? must you not have celerraed? must he not have celerraed? must we not have celerraed? must you not have celerraed? must they not have celerraed?
V-ing perfect
must I not have been celerraing? must you not have been celerraing? must he not have been celerraing? must we not have been celerraing? must you not have been celerraing? must they not have been celerraing?