I can survey you can survey she can survey we can survey you can survey they can survey
Forma con V-ing
I can be surveying you can be surveying she can be surveying we can be surveying you can be surveying they can be surveying
Perfecto
I can have surveyed you can have surveyed she can have surveyed we can have surveyed you can have surveyed they can have surveyed
Perfecto con V-ing
I can have been surveying you can have been surveying she can have been surveying we can have been surveying you can have been surveying they can have been surveying
Negación
Forma simple
I cannot survey you cannot survey she cannot survey we cannot survey you cannot survey they cannot survey
Forma con V-ing
I cannot be surveying you cannot be surveying she cannot be surveying we cannot be surveying you cannot be surveying they cannot be surveying
Perfecto
I cannot have surveyed you cannot have surveyed she cannot have surveyed we cannot have surveyed you cannot have surveyed they cannot have surveyed
Perfecto con V-ing
I cannot have been surveying you cannot have been surveying she cannot have been surveying we cannot have been surveying you cannot have been surveying they cannot have been surveying
Forma interrogativa
Forma simple
can I survey? can you survey? can she survey? can we survey? can you survey? can they survey?
Forma con V-ing
can I be surveying? can you be surveying? can she be surveying? can we be surveying? can you be surveying? can they be surveying?
Perfecto
can I have surveyed? can you have surveyed? can she have surveyed? can we have surveyed? can you have surveyed? can they have surveyed?
Perfecto con V-ing
can I have been surveying? can you have been surveying? can she have been surveying? can we have been surveying? can you have been surveying? can they have been surveying?
Forma interro-negativa
Forma simple
can I not survey? can you not survey? can she not survey? can we not survey? can you not survey? can they not survey?
Forma con V-ing
can I not be surveying? can you not be surveying? can she not be surveying? can we not be surveying? can you not be surveying? can they not be surveying?
Perfecto
can I not have surveyed? can you not have surveyed? can she not have surveyed? can we not have surveyed? can you not have surveyed? can they not have surveyed?
Perfecto con V-ing
can I not have been surveying? can you not have been surveying? can she not have been surveying? can we not have been surveying? can you not have been surveying? can they not have been surveying?