English verb conjugation
MUST CAST

Irregular verb: cast - cast - cast

Affirmation

Simple form	V-ing form
I must cast you must cast he must cast we must cast you must cast they must cast	I must be casting you must be casting he must be casting we must be casting you must be casting they must be casting
Perfect	V-ing perfect
I must have cast you must have cast he must have cast we must have cast you must have cast they must have cast	I must have been casting you must have been casting he must have been casting we must have been casting you must have been casting they must have been casting

Negation

Simple form	V-ing form
I must not cast you must not cast he must not cast we must not cast you must not cast they must not cast	I must not be casting you must not be casting he must not be casting we must not be casting you must not be casting they must not be casting
Perfect	V-ing perfect
I must not have cast you must not have cast he must not have cast we must not have cast you must not have cast they must not have cast	I must not have been casting you must not have been casting he must not have been casting we must not have been casting you must not have been casting they must not have been casting

Interrogative form

Simple form	V-ing form
must I cast? must you cast? must he cast? must we cast? must you cast? must they cast?	must I be casting? must you be casting? must he be casting? must we be casting? must you be casting? must they be casting?
Perfect	V-ing perfect
must I have cast? must you have cast? must he have cast? must we have cast? must you have cast? must they have cast?	must I have been casting? must you have been casting? must he have been casting? must we have been casting? must you have been casting? must they have been casting?

Interro-negative form

Simple form	V-ing form
must I not cast? must you not cast? must he not cast? must we not cast? must you not cast? must they not cast?	must I not be casting? must you not be casting? must he not be casting? must we not be casting? must you not be casting? must they not be casting?
Perfect	V-ing perfect
must I not have cast? must you not have cast? must he not have cast? must we not have cast? must you not have cast? must they not have cast?	must I not have been casting? must you not have been casting? must he not have been casting? must we not have been casting? must you not have been casting? must they not have been casting?