English verb conjugation
MUST HALLOO

Regular verb: halloo - hallooed - hallooed

Affirmation

Simple form	V-ing form
I must halloo you must halloo he must halloo we must halloo you must halloo they must halloo	I must be hallooing you must be hallooing he must be hallooing we must be hallooing you must be hallooing they must be hallooing
Perfect	V-ing perfect
I must have hallooed you must have hallooed he must have hallooed we must have hallooed you must have hallooed they must have hallooed	I must have been hallooing you must have been hallooing he must have been hallooing we must have been hallooing you must have been hallooing they must have been hallooing

Negation

Simple form	V-ing form
I must not halloo you must not halloo he must not halloo we must not halloo you must not halloo they must not halloo	I must not be hallooing you must not be hallooing he must not be hallooing we must not be hallooing you must not be hallooing they must not be hallooing
Perfect	V-ing perfect
I must not have hallooed you must not have hallooed he must not have hallooed we must not have hallooed you must not have hallooed they must not have hallooed	I must not have been hallooing you must not have been hallooing he must not have been hallooing we must not have been hallooing you must not have been hallooing they must not have been hallooing

Interrogative form

Simple form	V-ing form
must I halloo? must you halloo? must he halloo? must we halloo? must you halloo? must they halloo?	must I be hallooing? must you be hallooing? must he be hallooing? must we be hallooing? must you be hallooing? must they be hallooing?
Perfect	V-ing perfect
must I have hallooed? must you have hallooed? must he have hallooed? must we have hallooed? must you have hallooed? must they have hallooed?	must I have been hallooing? must you have been hallooing? must he have been hallooing? must we have been hallooing? must you have been hallooing? must they have been hallooing?

Interro-negative form

Simple form	V-ing form
must I not halloo? must you not halloo? must he not halloo? must we not halloo? must you not halloo? must they not halloo?	must I not be hallooing? must you not be hallooing? must he not be hallooing? must we not be hallooing? must you not be hallooing? must they not be hallooing?
Perfect	V-ing perfect
must I not have hallooed? must you not have hallooed? must he not have hallooed? must we not have hallooed? must you not have hallooed? must they not have hallooed?	must I not have been hallooing? must you not have been hallooing? must he not have been hallooing? must we not have been hallooing? must you not have been hallooing? must they not have been hallooing?