English verb conjugation
MUST FORECAST

Irregular verb: forecast - forecast - forecast

Affirmation

Simple form	V-ing form
I must forecast you must forecast she must forecast we must forecast you must forecast they must forecast	I must be forecasting you must be forecasting she must be forecasting we must be forecasting you must be forecasting they must be forecasting
Perfect	V-ing perfect
I must have forecast you must have forecast she must have forecast we must have forecast you must have forecast they must have forecast	I must have been forecasting you must have been forecasting she must have been forecasting we must have been forecasting you must have been forecasting they must have been forecasting

Negation

Simple form	V-ing form
I must not forecast you must not forecast she must not forecast we must not forecast you must not forecast they must not forecast	I must not be forecasting you must not be forecasting she must not be forecasting we must not be forecasting you must not be forecasting they must not be forecasting
Perfect	V-ing perfect
I must not have forecast you must not have forecast she must not have forecast we must not have forecast you must not have forecast they must not have forecast	I must not have been forecasting you must not have been forecasting she must not have been forecasting we must not have been forecasting you must not have been forecasting they must not have been forecasting

Interrogative form

Simple form	V-ing form
must I forecast? must you forecast? must she forecast? must we forecast? must you forecast? must they forecast?	must I be forecasting? must you be forecasting? must she be forecasting? must we be forecasting? must you be forecasting? must they be forecasting?
Perfect	V-ing perfect
must I have forecast? must you have forecast? must she have forecast? must we have forecast? must you have forecast? must they have forecast?	must I have been forecasting? must you have been forecasting? must she have been forecasting? must we have been forecasting? must you have been forecasting? must they have been forecasting?

Interro-negative form

Simple form	V-ing form
must I not forecast? must you not forecast? must she not forecast? must we not forecast? must you not forecast? must they not forecast?	must I not be forecasting? must you not be forecasting? must she not be forecasting? must we not be forecasting? must you not be forecasting? must they not be forecasting?
Perfect	V-ing perfect
must I not have forecast? must you not have forecast? must she not have forecast? must we not have forecast? must you not have forecast? must they not have forecast?	must I not have been forecasting? must you not have been forecasting? must she not have been forecasting? must we not have been forecasting? must you not have been forecasting? must they not have been forecasting?