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