I must whirl you must whirl she must whirl we must whirl you must whirl they must whirl
Forma con V-ing
I must be whirling you must be whirling she must be whirling we must be whirling you must be whirling they must be whirling
Perfecto
I must have whirled you must have whirled she must have whirled we must have whirled you must have whirled they must have whirled
Perfecto con V-ing
I must have been whirling you must have been whirling she must have been whirling we must have been whirling you must have been whirling they must have been whirling
Negación
Forma simple
I must not whirl you must not whirl she must not whirl we must not whirl you must not whirl they must not whirl
Forma con V-ing
I must not be whirling you must not be whirling she must not be whirling we must not be whirling you must not be whirling they must not be whirling
Perfecto
I must not have whirled you must not have whirled she must not have whirled we must not have whirled you must not have whirled they must not have whirled
Perfecto con V-ing
I must not have been whirling you must not have been whirling she must not have been whirling we must not have been whirling you must not have been whirling they must not have been whirling
Forma interrogativa
Forma simple
must I whirl? must you whirl? must she whirl? must we whirl? must you whirl? must they whirl?
Forma con V-ing
must I be whirling? must you be whirling? must she be whirling? must we be whirling? must you be whirling? must they be whirling?
Perfecto
must I have whirled? must you have whirled? must she have whirled? must we have whirled? must you have whirled? must they have whirled?
Perfecto con V-ing
must I have been whirling? must you have been whirling? must she have been whirling? must we have been whirling? must you have been whirling? must they have been whirling?
Forma interro-negativa
Forma simple
must I not whirl? must you not whirl? must she not whirl? must we not whirl? must you not whirl? must they not whirl?
Forma con V-ing
must I not be whirling? must you not be whirling? must she not be whirling? must we not be whirling? must you not be whirling? must they not be whirling?
Perfecto
must I not have whirled? must you not have whirled? must she not have whirled? must we not have whirled? must you not have whirled? must they not have whirled?
Perfecto con V-ing
must I not have been whirling? must you not have been whirling? must she not have been whirling? must we not have been whirling? must you not have been whirling? must they not have been whirling?