English verb conjugation
MUST PUTTER

Regular verb: putter - puttered - puttered

Affirmation

Simple form	V-ing form
I must putter you must putter he must putter we must putter you must putter they must putter	I must be puttering you must be puttering he must be puttering we must be puttering you must be puttering they must be puttering
Perfect	V-ing perfect
I must have puttered you must have puttered he must have puttered we must have puttered you must have puttered they must have puttered	I must have been puttering you must have been puttering he must have been puttering we must have been puttering you must have been puttering they must have been puttering

Negation

Simple form	V-ing form
I must not putter you must not putter he must not putter we must not putter you must not putter they must not putter	I must not be puttering you must not be puttering he must not be puttering we must not be puttering you must not be puttering they must not be puttering
Perfect	V-ing perfect
I must not have puttered you must not have puttered he must not have puttered we must not have puttered you must not have puttered they must not have puttered	I must not have been puttering you must not have been puttering he must not have been puttering we must not have been puttering you must not have been puttering they must not have been puttering

Interrogative form

Simple form	V-ing form
must I putter? must you putter? must he putter? must we putter? must you putter? must they putter?	must I be puttering? must you be puttering? must he be puttering? must we be puttering? must you be puttering? must they be puttering?
Perfect	V-ing perfect
must I have puttered? must you have puttered? must he have puttered? must we have puttered? must you have puttered? must they have puttered?	must I have been puttering? must you have been puttering? must he have been puttering? must we have been puttering? must you have been puttering? must they have been puttering?

Interro-negative form

Simple form	V-ing form
must I not putter? must you not putter? must he not putter? must we not putter? must you not putter? must they not putter?	must I not be puttering? must you not be puttering? must he not be puttering? must we not be puttering? must you not be puttering? must they not be puttering?
Perfect	V-ing perfect
must I not have puttered? must you not have puttered? must he not have puttered? must we not have puttered? must you not have puttered? must they not have puttered?	must I not have been puttering? must you not have been puttering? must he not have been puttering? must we not have been puttering? must you not have been puttering? must they not have been puttering?