English verb conjugation
MUST PARBUCKLE

Regular verb: parbuckle - parbuckled - parbuckled

Affirmation

Simple form	V-ing form
I must parbuckle you must parbuckle he must parbuckle we must parbuckle you must parbuckle they must parbuckle	I must be parbuckling you must be parbuckling he must be parbuckling we must be parbuckling you must be parbuckling they must be parbuckling
Perfect	V-ing perfect
I must have parbuckled you must have parbuckled he must have parbuckled we must have parbuckled you must have parbuckled they must have parbuckled	I must have been parbuckling you must have been parbuckling he must have been parbuckling we must have been parbuckling you must have been parbuckling they must have been parbuckling

Negation

Simple form	V-ing form
I must not parbuckle you must not parbuckle he must not parbuckle we must not parbuckle you must not parbuckle they must not parbuckle	I must not be parbuckling you must not be parbuckling he must not be parbuckling we must not be parbuckling you must not be parbuckling they must not be parbuckling
Perfect	V-ing perfect
I must not have parbuckled you must not have parbuckled he must not have parbuckled we must not have parbuckled you must not have parbuckled they must not have parbuckled	I must not have been parbuckling you must not have been parbuckling he must not have been parbuckling we must not have been parbuckling you must not have been parbuckling they must not have been parbuckling

Interrogative form

Simple form	V-ing form
must I parbuckle? must you parbuckle? must he parbuckle? must we parbuckle? must you parbuckle? must they parbuckle?	must I be parbuckling? must you be parbuckling? must he be parbuckling? must we be parbuckling? must you be parbuckling? must they be parbuckling?
Perfect	V-ing perfect
must I have parbuckled? must you have parbuckled? must he have parbuckled? must we have parbuckled? must you have parbuckled? must they have parbuckled?	must I have been parbuckling? must you have been parbuckling? must he have been parbuckling? must we have been parbuckling? must you have been parbuckling? must they have been parbuckling?

Interro-negative form

Simple form	V-ing form
must I not parbuckle? must you not parbuckle? must he not parbuckle? must we not parbuckle? must you not parbuckle? must they not parbuckle?	must I not be parbuckling? must you not be parbuckling? must he not be parbuckling? must we not be parbuckling? must you not be parbuckling? must they not be parbuckling?
Perfect	V-ing perfect
must I not have parbuckled? must you not have parbuckled? must he not have parbuckled? must we not have parbuckled? must you not have parbuckled? must they not have parbuckled?	must I not have been parbuckling? must you not have been parbuckling? must he not have been parbuckling? must we not have been parbuckling? must you not have been parbuckling? must they not have been parbuckling?