English verb conjugation
MUST YIELD

Regular verb: yield - yielded - yielded

Affirmation

Simple form	V-ing form
I must yield you must yield he must yield we must yield you must yield they must yield	I must be yielding you must be yielding he must be yielding we must be yielding you must be yielding they must be yielding
Perfect	V-ing perfect
I must have yielded you must have yielded he must have yielded we must have yielded you must have yielded they must have yielded	I must have been yielding you must have been yielding he must have been yielding we must have been yielding you must have been yielding they must have been yielding

Negation

Simple form	V-ing form
I must not yield you must not yield he must not yield we must not yield you must not yield they must not yield	I must not be yielding you must not be yielding he must not be yielding we must not be yielding you must not be yielding they must not be yielding
Perfect	V-ing perfect
I must not have yielded you must not have yielded he must not have yielded we must not have yielded you must not have yielded they must not have yielded	I must not have been yielding you must not have been yielding he must not have been yielding we must not have been yielding you must not have been yielding they must not have been yielding

Interrogative form

Simple form	V-ing form
must I yield? must you yield? must he yield? must we yield? must you yield? must they yield?	must I be yielding? must you be yielding? must he be yielding? must we be yielding? must you be yielding? must they be yielding?
Perfect	V-ing perfect
must I have yielded? must you have yielded? must he have yielded? must we have yielded? must you have yielded? must they have yielded?	must I have been yielding? must you have been yielding? must he have been yielding? must we have been yielding? must you have been yielding? must they have been yielding?

Interro-negative form

Simple form	V-ing form
must I not yield? must you not yield? must he not yield? must we not yield? must you not yield? must they not yield?	must I not be yielding? must you not be yielding? must he not be yielding? must we not be yielding? must you not be yielding? must they not be yielding?
Perfect	V-ing perfect
must I not have yielded? must you not have yielded? must he not have yielded? must we not have yielded? must you not have yielded? must they not have yielded?	must I not have been yielding? must you not have been yielding? must he not have been yielding? must we not have been yielding? must you not have been yielding? must they not have been yielding?