may calibrate
Regular verb: calibrate - calibrated- calibrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may calibrate
you may calibrate
she may calibrate
we may calibrate
you may calibrate
they may calibrate 	I may be calibrating
you may be calibrating
she may be calibrating
we may be calibrating
you may be calibrating
they may be calibrating	I may have calibrated
you may have calibrated
she may have calibrated
we may have calibrated
you may have calibrated
they may have calibrated	I may have been calibrating
you may have been calibrating
she may have been calibrating
we may have been calibrating
you may have been calibrating
they may have been calibrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't calibrate
you mayn't calibrate
she mayn't calibrate
we mayn't calibrate
you mayn't calibrate
they mayn't calibrate 	I mayn't be calibrating
you mayn't be calibrating
she mayn't be calibrating
we mayn't be calibrating
you mayn't be calibrating
they mayn't be calibrating	I mayn't have calibrated
you mayn't have calibrated
she mayn't have calibrated
we mayn't have calibrated
you mayn't have calibrated
they mayn't have calibrated	I mayn't have been calibrating
you mayn't have been calibrating
she mayn't have been calibrating
we mayn't have been calibrating
you mayn't have been calibrating
they mayn't have been calibrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I calibrate?
may you calibrate?
may she calibrate?
may we calibrate?
may you calibrate?
may they calibrate? 	may I be calibrating?
may you be calibrating?
may she be calibrating?
may we be calibrating?
may you be calibrating?
may they be calibrating? 	may I have calibrated?
may you have calibrated?
may she have calibrated?
may we have calibrated?
may you have calibrated?
may they have calibrated? 	may I have been calibrating?
may you have been calibrating?
may she have been calibrating?
may we have been calibrating?
may you have been calibrating?
may they have been calibrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I calibrate?
mayn't you calibrate?
mayn't she calibrate?
mayn't we calibrate?
mayn't you calibrate?
mayn't they calibrate? 	mayn't I be calibrating?
mayn't you be calibrating?
mayn't she be calibrating?
mayn't we be calibrating?
mayn't you be calibrating?
mayn't they be calibrating? 	mayn't I have calibrated?
mayn't you have calibrated?
mayn't she have calibrated?
mayn't we have calibrated?
mayn't you have calibrated?
mayn't they have calibrated? 	mayn't I have been calibrating?
mayn't you have been calibrating?
mayn't she have been calibrating?
mayn't we have been calibrating?
mayn't you have been calibrating?
mayn't they have been calibrating?