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 mustn't prognostic you mustn't prognostic she mustn't prognostic we mustn't prognostic you mustn't prognostic they mustn't prognostic
V-ing form
I mustn't be prognosticing you mustn't be prognosticing she mustn't be prognosticing we mustn't be prognosticing you mustn't be prognosticing they mustn't be prognosticing
Perfect
I mustn't have prognosticed you mustn't have prognosticed she mustn't have prognosticed we mustn't have prognosticed you mustn't have prognosticed they mustn't have prognosticed
V-ing perfect
I mustn't have been prognosticing you mustn't have been prognosticing she mustn't have been prognosticing we mustn't have been prognosticing you mustn't have been prognosticing they mustn't 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
mustn't I prognostic? mustn't you prognostic? mustn't she prognostic? mustn't we prognostic? mustn't you prognostic? mustn't they prognostic?
V-ing form
mustn't I be prognosticing? mustn't you be prognosticing? mustn't she be prognosticing? mustn't we be prognosticing? mustn't you be prognosticing? mustn't they be prognosticing?
Perfect
mustn't I have prognosticed? mustn't you have prognosticed? mustn't she have prognosticed? mustn't we have prognosticed? mustn't you have prognosticed? mustn't they have prognosticed?
V-ing perfect
mustn't I have been prognosticing? mustn't you have been prognosticing? mustn't she have been prognosticing? mustn't we have been prognosticing? mustn't you have been prognosticing? mustn't they have been prognosticing?