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