English verb conjugation
MUST CUPEL

Regular verb: cupel - cupeled - cupeled

Affirmation

Simple form	V-ing form
I must cupel you must cupel he must cupel we must cupel you must cupel they must cupel	I must be cupeling you must be cupeling he must be cupeling we must be cupeling you must be cupeling they must be cupeling
Perfect	V-ing perfect
I must have cupeled you must have cupeled he must have cupeled we must have cupeled you must have cupeled they must have cupeled	I must have been cupeling you must have been cupeling he must have been cupeling we must have been cupeling you must have been cupeling they must have been cupeling

Negation

Simple form	V-ing form
I must not cupel you must not cupel he must not cupel we must not cupel you must not cupel they must not cupel	I must not be cupeling you must not be cupeling he must not be cupeling we must not be cupeling you must not be cupeling they must not be cupeling
Perfect	V-ing perfect
I must not have cupeled you must not have cupeled he must not have cupeled we must not have cupeled you must not have cupeled they must not have cupeled	I must not have been cupeling you must not have been cupeling he must not have been cupeling we must not have been cupeling you must not have been cupeling they must not have been cupeling

Interrogative form

Simple form	V-ing form
must I cupel? must you cupel? must he cupel? must we cupel? must you cupel? must they cupel?	must I be cupeling? must you be cupeling? must he be cupeling? must we be cupeling? must you be cupeling? must they be cupeling?
Perfect	V-ing perfect
must I have cupeled? must you have cupeled? must he have cupeled? must we have cupeled? must you have cupeled? must they have cupeled?	must I have been cupeling? must you have been cupeling? must he have been cupeling? must we have been cupeling? must you have been cupeling? must they have been cupeling?

Interro-negative form

Simple form	V-ing form
must I not cupel? must you not cupel? must he not cupel? must we not cupel? must you not cupel? must they not cupel?	must I not be cupeling? must you not be cupeling? must he not be cupeling? must we not be cupeling? must you not be cupeling? must they not be cupeling?
Perfect	V-ing perfect
must I not have cupeled? must you not have cupeled? must he not have cupeled? must we not have cupeled? must you not have cupeled? must they not have cupeled?	must I not have been cupeling? must you not have been cupeling? must he not have been cupeling? must we not have been cupeling? must you not have been cupeling? must they not have been cupeling?