I could realize you could realize he could realize we could realize you could realize they could realize
Forma con V-ing
I could be realizing you could be realizing he could be realizing we could be realizing you could be realizing they could be realizing
Perfecto
I could have realized you could have realized he could have realized we could have realized you could have realized they could have realized
Perfecto con V-ing
I could have been realizing you could have been realizing he could have been realizing we could have been realizing you could have been realizing they could have been realizing
Negación
Forma simple
I couldn't realize you couldn't realize he couldn't realize we couldn't realize you couldn't realize they couldn't realize
Forma con V-ing
I couldn't be realizing you couldn't be realizing he couldn't be realizing we couldn't be realizing you couldn't be realizing they couldn't be realizing
Perfecto
I couldn't have realized you couldn't have realized he couldn't have realized we couldn't have realized you couldn't have realized they couldn't have realized
Perfecto con V-ing
I couldn't have been realizing you couldn't have been realizing he couldn't have been realizing we couldn't have been realizing you couldn't have been realizing they couldn't have been realizing
Forma interrogativa
Forma simple
could I realize? could you realize? could he realize? could we realize? could you realize? could they realize?
Forma con V-ing
could I be realizing? could you be realizing? could he be realizing? could we be realizing? could you be realizing? could they be realizing?
Perfecto
could I have realized? could you have realized? could he have realized? could we have realized? could you have realized? could they have realized?
Perfecto con V-ing
could I have been realizing? could you have been realizing? could he have been realizing? could we have been realizing? could you have been realizing? could they have been realizing?
Forma interro-negativa
Forma simple
couldn't I realize? couldn't you realize? couldn't he realize? couldn't we realize? couldn't you realize? couldn't they realize?
Forma con V-ing
couldn't I be realizing? couldn't you be realizing? couldn't he be realizing? couldn't we be realizing? couldn't you be realizing? couldn't they be realizing?
Perfecto
couldn't I have realized? couldn't you have realized? couldn't he have realized? couldn't we have realized? couldn't you have realized? couldn't they have realized?
Perfecto con V-ing
couldn't I have been realizing? couldn't you have been realizing? couldn't he have been realizing? couldn't we have been realizing? couldn't you have been realizing? couldn't they have been realizing?