I may stem you may stem he may stem we may stem you may stem they may stem
Forma con V-ing
I may be stemming you may be stemming he may be stemming we may be stemming you may be stemming they may be stemming
Perfecto
I may have stemmed you may have stemmed he may have stemmed we may have stemmed you may have stemmed they may have stemmed
Perfecto con V-ing
I may have been stemming you may have been stemming he may have been stemming we may have been stemming you may have been stemming they may have been stemming
Negación
Forma simple
I may not stem you may not stem he may not stem we may not stem you may not stem they may not stem
Forma con V-ing
I may not be stemming you may not be stemming he may not be stemming we may not be stemming you may not be stemming they may not be stemming
Perfecto
I may not have stemmed you may not have stemmed he may not have stemmed we may not have stemmed you may not have stemmed they may not have stemmed
Perfecto con V-ing
I may not have been stemming you may not have been stemming he may not have been stemming we may not have been stemming you may not have been stemming they may not have been stemming
Forma interrogativa
Forma simple
may I stem? may you stem? may he stem? may we stem? may you stem? may they stem?
Forma con V-ing
may I be stemming? may you be stemming? may he be stemming? may we be stemming? may you be stemming? may they be stemming?
Perfecto
may I have stemmed? may you have stemmed? may he have stemmed? may we have stemmed? may you have stemmed? may they have stemmed?
Perfecto con V-ing
may I have been stemming? may you have been stemming? may he have been stemming? may we have been stemming? may you have been stemming? may they have been stemming?
Forma interro-negativa
Forma simple
may I not stem? may you not stem? may he not stem? may we not stem? may you not stem? may they not stem?
Forma con V-ing
may I not be stemming? may you not be stemming? may he not be stemming? may we not be stemming? may you not be stemming? may they not be stemming?
Perfecto
may I not have stemmed? may you not have stemmed? may he not have stemmed? may we not have stemmed? may you not have stemmed? may they not have stemmed?
Perfecto con V-ing
may I not have been stemming? may you not have been stemming? may he not have been stemming? may we not have been stemming? may you not have been stemming? may they not have been stemming?