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