English verb conjugation
MUST TWINE

Regular verb: twine - twined - twined

Affirmation

Simple form	V-ing form
I must twine you must twine he must twine we must twine you must twine they must twine	I must be twining you must be twining he must be twining we must be twining you must be twining they must be twining
Perfect	V-ing perfect
I must have twined you must have twined he must have twined we must have twined you must have twined they must have twined	I must have been twining you must have been twining he must have been twining we must have been twining you must have been twining they must have been twining

Negation

Simple form	V-ing form
I must not twine you must not twine he must not twine we must not twine you must not twine they must not twine	I must not be twining you must not be twining he must not be twining we must not be twining you must not be twining they must not be twining
Perfect	V-ing perfect
I must not have twined you must not have twined he must not have twined we must not have twined you must not have twined they must not have twined	I must not have been twining you must not have been twining he must not have been twining we must not have been twining you must not have been twining they must not have been twining

Interrogative form

Simple form	V-ing form
must I twine? must you twine? must he twine? must we twine? must you twine? must they twine?	must I be twining? must you be twining? must he be twining? must we be twining? must you be twining? must they be twining?
Perfect	V-ing perfect
must I have twined? must you have twined? must he have twined? must we have twined? must you have twined? must they have twined?	must I have been twining? must you have been twining? must he have been twining? must we have been twining? must you have been twining? must they have been twining?

Interro-negative form

Simple form	V-ing form
must I not twine? must you not twine? must he not twine? must we not twine? must you not twine? must they not twine?	must I not be twining? must you not be twining? must he not be twining? must we not be twining? must you not be twining? must they not be twining?
Perfect	V-ing perfect
must I not have twined? must you not have twined? must he not have twined? must we not have twined? must you not have twined? must they not have twined?	must I not have been twining? must you not have been twining? must he not have been twining? must we not have been twining? must you not have been twining? must they not have been twining?