I must throb you must throb she must throb we must throb you must throb they must throb
Forma con V-ing
I must be throbbing you must be throbbing she must be throbbing we must be throbbing you must be throbbing they must be throbbing
Perfecto
I must have throbbed you must have throbbed she must have throbbed we must have throbbed you must have throbbed they must have throbbed
Perfecto con V-ing
I must have been throbbing you must have been throbbing she must have been throbbing we must have been throbbing you must have been throbbing they must have been throbbing
Negación
Forma simple
I must not throb you must not throb she must not throb we must not throb you must not throb they must not throb
Forma con V-ing
I must not be throbbing you must not be throbbing she must not be throbbing we must not be throbbing you must not be throbbing they must not be throbbing
Perfecto
I must not have throbbed you must not have throbbed she must not have throbbed we must not have throbbed you must not have throbbed they must not have throbbed
Perfecto con V-ing
I must not have been throbbing you must not have been throbbing she must not have been throbbing we must not have been throbbing you must not have been throbbing they must not have been throbbing
Forma interrogativa
Forma simple
must I throb? must you throb? must she throb? must we throb? must you throb? must they throb?
Forma con V-ing
must I be throbbing? must you be throbbing? must she be throbbing? must we be throbbing? must you be throbbing? must they be throbbing?
Perfecto
must I have throbbed? must you have throbbed? must she have throbbed? must we have throbbed? must you have throbbed? must they have throbbed?
Perfecto con V-ing
must I have been throbbing? must you have been throbbing? must she have been throbbing? must we have been throbbing? must you have been throbbing? must they have been throbbing?
Forma interro-negativa
Forma simple
must I not throb? must you not throb? must she not throb? must we not throb? must you not throb? must they not throb?
Forma con V-ing
must I not be throbbing? must you not be throbbing? must she not be throbbing? must we not be throbbing? must you not be throbbing? must they not be throbbing?
Perfecto
must I not have throbbed? must you not have throbbed? must she not have throbbed? must we not have throbbed? must you not have throbbed? must they not have throbbed?
Perfecto con V-ing
must I not have been throbbing? must you not have been throbbing? must she not have been throbbing? must we not have been throbbing? must you not have been throbbing? must they not have been throbbing?