English verb conjugation
MUST HERD

Regular verb: herd - herded - herded

Affirmation

Simple form	V-ing form
I must herd you must herd he must herd we must herd you must herd they must herd	I must be herding you must be herding he must be herding we must be herding you must be herding they must be herding
Perfect	V-ing perfect
I must have herded you must have herded he must have herded we must have herded you must have herded they must have herded	I must have been herding you must have been herding he must have been herding we must have been herding you must have been herding they must have been herding

Negation

Simple form	V-ing form
I must not herd you must not herd he must not herd we must not herd you must not herd they must not herd	I must not be herding you must not be herding he must not be herding we must not be herding you must not be herding they must not be herding
Perfect	V-ing perfect
I must not have herded you must not have herded he must not have herded we must not have herded you must not have herded they must not have herded	I must not have been herding you must not have been herding he must not have been herding we must not have been herding you must not have been herding they must not have been herding

Interrogative form

Simple form	V-ing form
must I herd? must you herd? must he herd? must we herd? must you herd? must they herd?	must I be herding? must you be herding? must he be herding? must we be herding? must you be herding? must they be herding?
Perfect	V-ing perfect
must I have herded? must you have herded? must he have herded? must we have herded? must you have herded? must they have herded?	must I have been herding? must you have been herding? must he have been herding? must we have been herding? must you have been herding? must they have been herding?

Interro-negative form

Simple form	V-ing form
must I not herd? must you not herd? must he not herd? must we not herd? must you not herd? must they not herd?	must I not be herding? must you not be herding? must he not be herding? must we not be herding? must you not be herding? must they not be herding?
Perfect	V-ing perfect
must I not have herded? must you not have herded? must he not have herded? must we not have herded? must you not have herded? must they not have herded?	must I not have been herding? must you not have been herding? must he not have been herding? must we not have been herding? must you not have been herding? must they not have been herding?