I must sough you must sough she must sough we must sough you must sough they must sough
Forma con V-ing
I must be soughing you must be soughing she must be soughing we must be soughing you must be soughing they must be soughing
Perfecto
I must have soughed you must have soughed she must have soughed we must have soughed you must have soughed they must have soughed
Perfecto con V-ing
I must have been soughing you must have been soughing she must have been soughing we must have been soughing you must have been soughing they must have been soughing
Negación
Forma simple
I must not sough you must not sough she must not sough we must not sough you must not sough they must not sough
Forma con V-ing
I must not be soughing you must not be soughing she must not be soughing we must not be soughing you must not be soughing they must not be soughing
Perfecto
I must not have soughed you must not have soughed she must not have soughed we must not have soughed you must not have soughed they must not have soughed
Perfecto con V-ing
I must not have been soughing you must not have been soughing she must not have been soughing we must not have been soughing you must not have been soughing they must not have been soughing
Forma interrogativa
Forma simple
must I sough? must you sough? must she sough? must we sough? must you sough? must they sough?
Forma con V-ing
must I be soughing? must you be soughing? must she be soughing? must we be soughing? must you be soughing? must they be soughing?
Perfecto
must I have soughed? must you have soughed? must she have soughed? must we have soughed? must you have soughed? must they have soughed?
Perfecto con V-ing
must I have been soughing? must you have been soughing? must she have been soughing? must we have been soughing? must you have been soughing? must they have been soughing?
Forma interro-negativa
Forma simple
must I not sough? must you not sough? must she not sough? must we not sough? must you not sough? must they not sough?
Forma con V-ing
must I not be soughing? must you not be soughing? must she not be soughing? must we not be soughing? must you not be soughing? must they not be soughing?
Perfecto
must I not have soughed? must you not have soughed? must she not have soughed? must we not have soughed? must you not have soughed? must they not have soughed?
Perfecto con V-ing
must I not have been soughing? must you not have been soughing? must she not have been soughing? must we not have been soughing? must you not have been soughing? must they not have been soughing?