I can perceive you can perceive she can perceive we can perceive you can perceive they can perceive
Forma con V-ing
I can be perceiving you can be perceiving she can be perceiving we can be perceiving you can be perceiving they can be perceiving
Perfecto
I can have perceived you can have perceived she can have perceived we can have perceived you can have perceived they can have perceived
Perfecto con V-ing
I can have been perceiving you can have been perceiving she can have been perceiving we can have been perceiving you can have been perceiving they can have been perceiving
Negación
Forma simple
I can't perceive you can't perceive she can't perceive we can't perceive you can't perceive they can't perceive
Forma con V-ing
I can't be perceiving you can't be perceiving she can't be perceiving we can't be perceiving you can't be perceiving they can't be perceiving
Perfecto
I can't have perceived you can't have perceived she can't have perceived we can't have perceived you can't have perceived they can't have perceived
Perfecto con V-ing
I can't have been perceiving you can't have been perceiving she can't have been perceiving we can't have been perceiving you can't have been perceiving they can't have been perceiving
Forma interrogativa
Forma simple
can I perceive? can you perceive? can she perceive? can we perceive? can you perceive? can they perceive?
Forma con V-ing
can I be perceiving? can you be perceiving? can she be perceiving? can we be perceiving? can you be perceiving? can they be perceiving?
Perfecto
can I have perceived? can you have perceived? can she have perceived? can we have perceived? can you have perceived? can they have perceived?
Perfecto con V-ing
can I have been perceiving? can you have been perceiving? can she have been perceiving? can we have been perceiving? can you have been perceiving? can they have been perceiving?
Forma interro-negativa
Forma simple
can't I perceive? can't you perceive? can't she perceive? can't we perceive? can't you perceive? can't they perceive?
Forma con V-ing
can't I be perceiving? can't you be perceiving? can't she be perceiving? can't we be perceiving? can't you be perceiving? can't they be perceiving?
Perfecto
can't I have perceived? can't you have perceived? can't she have perceived? can't we have perceived? can't you have perceived? can't they have perceived?
Perfecto con V-ing
can't I have been perceiving? can't you have been perceiving? can't she have been perceiving? can't we have been perceiving? can't you have been perceiving? can't they have been perceiving?