I could measure you could measure she could measure we could measure you could measure they could measure
Forma con V-ing
I could be measuring you could be measuring she could be measuring we could be measuring you could be measuring they could be measuring
Perfecto
I could have measured you could have measured she could have measured we could have measured you could have measured they could have measured
Perfecto con V-ing
I could have been measuring you could have been measuring she could have been measuring we could have been measuring you could have been measuring they could have been measuring
Negación
Forma simple
I could not measure you could not measure she could not measure we could not measure you could not measure they could not measure
Forma con V-ing
I could not be measuring you could not be measuring she could not be measuring we could not be measuring you could not be measuring they could not be measuring
Perfecto
I could not have measured you could not have measured she could not have measured we could not have measured you could not have measured they could not have measured
Perfecto con V-ing
I could not have been measuring you could not have been measuring she could not have been measuring we could not have been measuring you could not have been measuring they could not have been measuring
Forma interrogativa
Forma simple
could I measure? could you measure? could she measure? could we measure? could you measure? could they measure?
Forma con V-ing
could I be measuring? could you be measuring? could she be measuring? could we be measuring? could you be measuring? could they be measuring?
Perfecto
could I have measured? could you have measured? could she have measured? could we have measured? could you have measured? could they have measured?
Perfecto con V-ing
could I have been measuring? could you have been measuring? could she have been measuring? could we have been measuring? could you have been measuring? could they have been measuring?
Forma interro-negativa
Forma simple
could I not measure? could you not measure? could she not measure? could we not measure? could you not measure? could they not measure?
Forma con V-ing
could I not be measuring? could you not be measuring? could she not be measuring? could we not be measuring? could you not be measuring? could they not be measuring?
Perfecto
could I not have measured? could you not have measured? could she not have measured? could we not have measured? could you not have measured? could they not have measured?
Perfecto con V-ing
could I not have been measuring? could you not have been measuring? could she not have been measuring? could we not have been measuring? could you not have been measuring? could they not have been measuring?