I must thicken you must thicken she must thicken we must thicken you must thicken they must thicken
Forma con V-ing
I must be thickening you must be thickening she must be thickening we must be thickening you must be thickening they must be thickening
Perfecto
I must have thickened you must have thickened she must have thickened we must have thickened you must have thickened they must have thickened
Perfecto con V-ing
I must have been thickening you must have been thickening she must have been thickening we must have been thickening you must have been thickening they must have been thickening
Negación
Forma simple
I must not thicken you must not thicken she must not thicken we must not thicken you must not thicken they must not thicken
Forma con V-ing
I must not be thickening you must not be thickening she must not be thickening we must not be thickening you must not be thickening they must not be thickening
Perfecto
I must not have thickened you must not have thickened she must not have thickened we must not have thickened you must not have thickened they must not have thickened
Perfecto con V-ing
I must not have been thickening you must not have been thickening she must not have been thickening we must not have been thickening you must not have been thickening they must not have been thickening
Forma interrogativa
Forma simple
must I thicken? must you thicken? must she thicken? must we thicken? must you thicken? must they thicken?
Forma con V-ing
must I be thickening? must you be thickening? must she be thickening? must we be thickening? must you be thickening? must they be thickening?
Perfecto
must I have thickened? must you have thickened? must she have thickened? must we have thickened? must you have thickened? must they have thickened?
Perfecto con V-ing
must I have been thickening? must you have been thickening? must she have been thickening? must we have been thickening? must you have been thickening? must they have been thickening?
Forma interro-negativa
Forma simple
must I not thicken? must you not thicken? must she not thicken? must we not thicken? must you not thicken? must they not thicken?
Forma con V-ing
must I not be thickening? must you not be thickening? must she not be thickening? must we not be thickening? must you not be thickening? must they not be thickening?
Perfecto
must I not have thickened? must you not have thickened? must she not have thickened? must we not have thickened? must you not have thickened? must they not have thickened?
Perfecto con V-ing
must I not have been thickening? must you not have been thickening? must she not have been thickening? must we not have been thickening? must you not have been thickening? must they not have been thickening?