I can measure you can measure he can measure we can measure you can measure they can measure
V-ing form
I can be measuring you can be measuring he can be measuring we can be measuring you can be measuring they can be measuring
Perfect
I can have measured you can have measured he can have measured we can have measured you can have measured they can have measured
V-ing perfect
I can have been measuring you can have been measuring he can have been measuring we can have been measuring you can have been measuring they can have been measuring
Negation
Simple form
I cannot measure you cannot measure he cannot measure we cannot measure you cannot measure they cannot measure
V-ing form
I cannot be measuring you cannot be measuring he cannot be measuring we cannot be measuring you cannot be measuring they cannot be measuring
Perfect
I cannot have measured you cannot have measured he cannot have measured we cannot have measured you cannot have measured they cannot have measured
V-ing perfect
I cannot have been measuring you cannot have been measuring he cannot have been measuring we cannot have been measuring you cannot have been measuring they cannot have been measuring
Interrogative form
Simple form
can I measure? can you measure? can he measure? can we measure? can you measure? can they measure?
V-ing form
can I be measuring? can you be measuring? can he be measuring? can we be measuring? can you be measuring? can they be measuring?
Perfect
can I have measured? can you have measured? can he have measured? can we have measured? can you have measured? can they have measured?
V-ing perfect
can I have been measuring? can you have been measuring? can he have been measuring? can we have been measuring? can you have been measuring? can they have been measuring?
Interro-negative form
Simple form
can I not measure? can you not measure? can he not measure? can we not measure? can you not measure? can they not measure?
V-ing form
can I not be measuring? can you not be measuring? can he not be measuring? can we not be measuring? can you not be measuring? can they not be measuring?
Perfect
can I not have measured? can you not have measured? can he not have measured? can we not have measured? can you not have measured? can they not have measured?
V-ing perfect
can I not have been measuring? can you not have been measuring? can he not have been measuring? can we not have been measuring? can you not have been measuring? can they not have been measuring?