English verb conjugation
MUST ARM

Regular verb: arm - armed - armed

Affirmation

Simple form	V-ing form
I must arm you must arm he must arm we must arm you must arm they must arm	I must be arming you must be arming he must be arming we must be arming you must be arming they must be arming
Perfect	V-ing perfect
I must have armed you must have armed he must have armed we must have armed you must have armed they must have armed	I must have been arming you must have been arming he must have been arming we must have been arming you must have been arming they must have been arming

Negation

Simple form	V-ing form
I must not arm you must not arm he must not arm we must not arm you must not arm they must not arm	I must not be arming you must not be arming he must not be arming we must not be arming you must not be arming they must not be arming
Perfect	V-ing perfect
I must not have armed you must not have armed he must not have armed we must not have armed you must not have armed they must not have armed	I must not have been arming you must not have been arming he must not have been arming we must not have been arming you must not have been arming they must not have been arming

Interrogative form

Simple form	V-ing form
must I arm? must you arm? must he arm? must we arm? must you arm? must they arm?	must I be arming? must you be arming? must he be arming? must we be arming? must you be arming? must they be arming?
Perfect	V-ing perfect
must I have armed? must you have armed? must he have armed? must we have armed? must you have armed? must they have armed?	must I have been arming? must you have been arming? must he have been arming? must we have been arming? must you have been arming? must they have been arming?

Interro-negative form

Simple form	V-ing form
must I not arm? must you not arm? must he not arm? must we not arm? must you not arm? must they not arm?	must I not be arming? must you not be arming? must he not be arming? must we not be arming? must you not be arming? must they not be arming?
Perfect	V-ing perfect
must I not have armed? must you not have armed? must he not have armed? must we not have armed? must you not have armed? must they not have armed?	must I not have been arming? must you not have been arming? must he not have been arming? must we not have been arming? must you not have been arming? must they not have been arming?