I must putter you must putter she must putter we must putter you must putter they must putter
Forma con V-ing
I must be puttering you must be puttering she must be puttering we must be puttering you must be puttering they must be puttering
Perfecto
I must have puttered you must have puttered she must have puttered we must have puttered you must have puttered they must have puttered
Perfecto con V-ing
I must have been puttering you must have been puttering she must have been puttering we must have been puttering you must have been puttering they must have been puttering
Negación
Forma simple
I must not putter you must not putter she must not putter we must not putter you must not putter they must not putter
Forma con V-ing
I must not be puttering you must not be puttering she must not be puttering we must not be puttering you must not be puttering they must not be puttering
Perfecto
I must not have puttered you must not have puttered she must not have puttered we must not have puttered you must not have puttered they must not have puttered
Perfecto con V-ing
I must not have been puttering you must not have been puttering she must not have been puttering we must not have been puttering you must not have been puttering they must not have been puttering
Forma interrogativa
Forma simple
must I putter? must you putter? must she putter? must we putter? must you putter? must they putter?
Forma con V-ing
must I be puttering? must you be puttering? must she be puttering? must we be puttering? must you be puttering? must they be puttering?
Perfecto
must I have puttered? must you have puttered? must she have puttered? must we have puttered? must you have puttered? must they have puttered?
Perfecto con V-ing
must I have been puttering? must you have been puttering? must she have been puttering? must we have been puttering? must you have been puttering? must they have been puttering?
Forma interro-negativa
Forma simple
must I not putter? must you not putter? must she not putter? must we not putter? must you not putter? must they not putter?
Forma con V-ing
must I not be puttering? must you not be puttering? must she not be puttering? must we not be puttering? must you not be puttering? must they not be puttering?
Perfecto
must I not have puttered? must you not have puttered? must she not have puttered? must we not have puttered? must you not have puttered? must they not have puttered?
Perfecto con V-ing
must I not have been puttering? must you not have been puttering? must she not have been puttering? must we not have been puttering? must you not have been puttering? must they not have been puttering?