I could ulcerate you could ulcerate she could ulcerate we could ulcerate you could ulcerate they could ulcerate
Forma con V-ing
I could be ulcerating you could be ulcerating she could be ulcerating we could be ulcerating you could be ulcerating they could be ulcerating
Perfecto
I could have ulcerated you could have ulcerated she could have ulcerated we could have ulcerated you could have ulcerated they could have ulcerated
Perfecto con V-ing
I could have been ulcerating you could have been ulcerating she could have been ulcerating we could have been ulcerating you could have been ulcerating they could have been ulcerating
Negación
Forma simple
I could not ulcerate you could not ulcerate she could not ulcerate we could not ulcerate you could not ulcerate they could not ulcerate
Forma con V-ing
I could not be ulcerating you could not be ulcerating she could not be ulcerating we could not be ulcerating you could not be ulcerating they could not be ulcerating
Perfecto
I could not have ulcerated you could not have ulcerated she could not have ulcerated we could not have ulcerated you could not have ulcerated they could not have ulcerated
Perfecto con V-ing
I could not have been ulcerating you could not have been ulcerating she could not have been ulcerating we could not have been ulcerating you could not have been ulcerating they could not have been ulcerating
Forma interrogativa
Forma simple
could I ulcerate? could you ulcerate? could she ulcerate? could we ulcerate? could you ulcerate? could they ulcerate?
Forma con V-ing
could I be ulcerating? could you be ulcerating? could she be ulcerating? could we be ulcerating? could you be ulcerating? could they be ulcerating?
Perfecto
could I have ulcerated? could you have ulcerated? could she have ulcerated? could we have ulcerated? could you have ulcerated? could they have ulcerated?
Perfecto con V-ing
could I have been ulcerating? could you have been ulcerating? could she have been ulcerating? could we have been ulcerating? could you have been ulcerating? could they have been ulcerating?
Forma interro-negativa
Forma simple
could I not ulcerate? could you not ulcerate? could she not ulcerate? could we not ulcerate? could you not ulcerate? could they not ulcerate?
Forma con V-ing
could I not be ulcerating? could you not be ulcerating? could she not be ulcerating? could we not be ulcerating? could you not be ulcerating? could they not be ulcerating?
Perfecto
could I not have ulcerated? could you not have ulcerated? could she not have ulcerated? could we not have ulcerated? could you not have ulcerated? could they not have ulcerated?
Perfecto con V-ing
could I not have been ulcerating? could you not have been ulcerating? could she not have been ulcerating? could we not have been ulcerating? could you not have been ulcerating? could they not have been ulcerating?