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