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 mustn't cast you mustn't cast he mustn't cast we mustn't cast you mustn't cast they mustn't cast	I mustn't be casting you mustn't be casting he mustn't be casting we mustn't be casting you mustn't be casting they mustn't be casting
Perfect	V-ing perfect
I mustn't have cast you mustn't have cast he mustn't have cast we mustn't have cast you mustn't have cast they mustn't have cast	I mustn't have been casting you mustn't have been casting he mustn't have been casting we mustn't have been casting you mustn't have been casting they mustn't 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
mustn't I cast? mustn't you cast? mustn't he cast? mustn't we cast? mustn't you cast? mustn't they cast?	mustn't I be casting? mustn't you be casting? mustn't he be casting? mustn't we be casting? mustn't you be casting? mustn't they be casting?
Perfect	V-ing perfect
mustn't I have cast? mustn't you have cast? mustn't he have cast? mustn't we have cast? mustn't you have cast? mustn't they have cast?	mustn't I have been casting? mustn't you have been casting? mustn't he have been casting? mustn't we have been casting? mustn't you have been casting? mustn't they have been casting?