I must clutch you must clutch she must clutch we must clutch you must clutch they must clutch
Forma con V-ing
I must be clutching you must be clutching she must be clutching we must be clutching you must be clutching they must be clutching
Perfecto
I must have clutched you must have clutched she must have clutched we must have clutched you must have clutched they must have clutched
Perfecto con V-ing
I must have been clutching you must have been clutching she must have been clutching we must have been clutching you must have been clutching they must have been clutching
Negación
Forma simple
I must not clutch you must not clutch she must not clutch we must not clutch you must not clutch they must not clutch
Forma con V-ing
I must not be clutching you must not be clutching she must not be clutching we must not be clutching you must not be clutching they must not be clutching
Perfecto
I must not have clutched you must not have clutched she must not have clutched we must not have clutched you must not have clutched they must not have clutched
Perfecto con V-ing
I must not have been clutching you must not have been clutching she must not have been clutching we must not have been clutching you must not have been clutching they must not have been clutching
Forma interrogativa
Forma simple
must I clutch? must you clutch? must she clutch? must we clutch? must you clutch? must they clutch?
Forma con V-ing
must I be clutching? must you be clutching? must she be clutching? must we be clutching? must you be clutching? must they be clutching?
Perfecto
must I have clutched? must you have clutched? must she have clutched? must we have clutched? must you have clutched? must they have clutched?
Perfecto con V-ing
must I have been clutching? must you have been clutching? must she have been clutching? must we have been clutching? must you have been clutching? must they have been clutching?
Forma interro-negativa
Forma simple
must I not clutch? must you not clutch? must she not clutch? must we not clutch? must you not clutch? must they not clutch?
Forma con V-ing
must I not be clutching? must you not be clutching? must she not be clutching? must we not be clutching? must you not be clutching? must they not be clutching?
Perfecto
must I not have clutched? must you not have clutched? must she not have clutched? must we not have clutched? must you not have clutched? must they not have clutched?
Perfecto con V-ing
must I not have been clutching? must you not have been clutching? must she not have been clutching? must we not have been clutching? must you not have been clutching? must they not have been clutching?