English verb conjugation
MUST POISON

Regular verb: poison - poisoned - poisoned

Affirmation

Simple form	V-ing form
I must poison you must poison he must poison we must poison you must poison they must poison	I must be poisoning you must be poisoning he must be poisoning we must be poisoning you must be poisoning they must be poisoning
Perfect	V-ing perfect
I must have poisoned you must have poisoned he must have poisoned we must have poisoned you must have poisoned they must have poisoned	I must have been poisoning you must have been poisoning he must have been poisoning we must have been poisoning you must have been poisoning they must have been poisoning

Negation

Simple form	V-ing form
I must not poison you must not poison he must not poison we must not poison you must not poison they must not poison	I must not be poisoning you must not be poisoning he must not be poisoning we must not be poisoning you must not be poisoning they must not be poisoning
Perfect	V-ing perfect
I must not have poisoned you must not have poisoned he must not have poisoned we must not have poisoned you must not have poisoned they must not have poisoned	I must not have been poisoning you must not have been poisoning he must not have been poisoning we must not have been poisoning you must not have been poisoning they must not have been poisoning

Interrogative form

Simple form	V-ing form
must I poison? must you poison? must he poison? must we poison? must you poison? must they poison?	must I be poisoning? must you be poisoning? must he be poisoning? must we be poisoning? must you be poisoning? must they be poisoning?
Perfect	V-ing perfect
must I have poisoned? must you have poisoned? must he have poisoned? must we have poisoned? must you have poisoned? must they have poisoned?	must I have been poisoning? must you have been poisoning? must he have been poisoning? must we have been poisoning? must you have been poisoning? must they have been poisoning?

Interro-negative form

Simple form	V-ing form
must I not poison? must you not poison? must he not poison? must we not poison? must you not poison? must they not poison?	must I not be poisoning? must you not be poisoning? must he not be poisoning? must we not be poisoning? must you not be poisoning? must they not be poisoning?
Perfect	V-ing perfect
must I not have poisoned? must you not have poisoned? must he not have poisoned? must we not have poisoned? must you not have poisoned? must they not have poisoned?	must I not have been poisoning? must you not have been poisoning? must he not have been poisoning? must we not have been poisoning? must you not have been poisoning? must they not have been poisoning?