I must degrease you must degrease she must degrease we must degrease you must degrease they must degrease
Forma con V-ing
I must be degreasing you must be degreasing she must be degreasing we must be degreasing you must be degreasing they must be degreasing
Perfecto
I must have degreased you must have degreased she must have degreased we must have degreased you must have degreased they must have degreased
Perfecto con V-ing
I must have been degreasing you must have been degreasing she must have been degreasing we must have been degreasing you must have been degreasing they must have been degreasing
Negación
Forma simple
I must not degrease you must not degrease she must not degrease we must not degrease you must not degrease they must not degrease
Forma con V-ing
I must not be degreasing you must not be degreasing she must not be degreasing we must not be degreasing you must not be degreasing they must not be degreasing
Perfecto
I must not have degreased you must not have degreased she must not have degreased we must not have degreased you must not have degreased they must not have degreased
Perfecto con V-ing
I must not have been degreasing you must not have been degreasing she must not have been degreasing we must not have been degreasing you must not have been degreasing they must not have been degreasing
Forma interrogativa
Forma simple
must I degrease? must you degrease? must she degrease? must we degrease? must you degrease? must they degrease?
Forma con V-ing
must I be degreasing? must you be degreasing? must she be degreasing? must we be degreasing? must you be degreasing? must they be degreasing?
Perfecto
must I have degreased? must you have degreased? must she have degreased? must we have degreased? must you have degreased? must they have degreased?
Perfecto con V-ing
must I have been degreasing? must you have been degreasing? must she have been degreasing? must we have been degreasing? must you have been degreasing? must they have been degreasing?
Forma interro-negativa
Forma simple
must I not degrease? must you not degrease? must she not degrease? must we not degrease? must you not degrease? must they not degrease?
Forma con V-ing
must I not be degreasing? must you not be degreasing? must she not be degreasing? must we not be degreasing? must you not be degreasing? must they not be degreasing?
Perfecto
must I not have degreased? must you not have degreased? must she not have degreased? must we not have degreased? must you not have degreased? must they not have degreased?
Perfecto con V-ing
must I not have been degreasing? must you not have been degreasing? must she not have been degreasing? must we not have been degreasing? must you not have been degreasing? must they not have been degreasing?