I can measure you can measure she can measure we can measure you can measure they can measure
V-ing form
I can be measuring you can be measuring she can be measuring we can be measuring you can be measuring they can be measuring
Perfect
I can have measured you can have measured she 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 she can have been measuring we can have been measuring you can have been measuring they can have been measuring
Negation
Simple form
I can't measure you can't measure she can't measure we can't measure you can't measure they can't measure
V-ing form
I can't be measuring you can't be measuring she can't be measuring we can't be measuring you can't be measuring they can't be measuring
Perfect
I can't have measured you can't have measured she can't have measured we can't have measured you can't have measured they can't have measured
V-ing perfect
I can't have been measuring you can't have been measuring she can't have been measuring we can't have been measuring you can't have been measuring they can't have been measuring
Interrogative form
Simple form
can I measure? can you measure? can she measure? can we measure? can you measure? can they measure?
V-ing form
can I be measuring? can you be measuring? can she be measuring? can we be measuring? can you be measuring? can they be measuring?
Perfect
can I have measured? can you have measured? can she 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 she have been measuring? can we have been measuring? can you have been measuring? can they have been measuring?
Interro-negative form
Simple form
can't I measure? can't you measure? can't she measure? can't we measure? can't you measure? can't they measure?
V-ing form
can't I be measuring? can't you be measuring? can't she be measuring? can't we be measuring? can't you be measuring? can't they be measuring?
Perfect
can't I have measured? can't you have measured? can't she have measured? can't we have measured? can't you have measured? can't they have measured?
V-ing perfect
can't I have been measuring? can't you have been measuring? can't she have been measuring? can't we have been measuring? can't you have been measuring? can't they have been measuring?