I must writhe you must writhe she must writhe we must writhe you must writhe they must writhe
Forma con V-ing
I must be writhing you must be writhing she must be writhing we must be writhing you must be writhing they must be writhing
Perfecto
I must have writhed you must have writhed she must have writhed we must have writhed you must have writhed they must have writhed
Perfecto con V-ing
I must have been writhing you must have been writhing she must have been writhing we must have been writhing you must have been writhing they must have been writhing
Negación
Forma simple
I must not writhe you must not writhe she must not writhe we must not writhe you must not writhe they must not writhe
Forma con V-ing
I must not be writhing you must not be writhing she must not be writhing we must not be writhing you must not be writhing they must not be writhing
Perfecto
I must not have writhed you must not have writhed she must not have writhed we must not have writhed you must not have writhed they must not have writhed
Perfecto con V-ing
I must not have been writhing you must not have been writhing she must not have been writhing we must not have been writhing you must not have been writhing they must not have been writhing
Forma interrogativa
Forma simple
must I writhe? must you writhe? must she writhe? must we writhe? must you writhe? must they writhe?
Forma con V-ing
must I be writhing? must you be writhing? must she be writhing? must we be writhing? must you be writhing? must they be writhing?
Perfecto
must I have writhed? must you have writhed? must she have writhed? must we have writhed? must you have writhed? must they have writhed?
Perfecto con V-ing
must I have been writhing? must you have been writhing? must she have been writhing? must we have been writhing? must you have been writhing? must they have been writhing?
Forma interro-negativa
Forma simple
must I not writhe? must you not writhe? must she not writhe? must we not writhe? must you not writhe? must they not writhe?
Forma con V-ing
must I not be writhing? must you not be writhing? must she not be writhing? must we not be writhing? must you not be writhing? must they not be writhing?
Perfecto
must I not have writhed? must you not have writhed? must she not have writhed? must we not have writhed? must you not have writhed? must they not have writhed?
Perfecto con V-ing
must I not have been writhing? must you not have been writhing? must she not have been writhing? must we not have been writhing? must you not have been writhing? must they not have been writhing?