may perceive
Regular verb: perceive - perceived- perceived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may perceive
you may perceive
she may perceive
we may perceive
you may perceive
they may perceive 	I may be perceiving
you may be perceiving
she may be perceiving
we may be perceiving
you may be perceiving
they may be perceiving	I may have perceived
you may have perceived
she may have perceived
we may have perceived
you may have perceived
they may have perceived	I may have been perceiving
you may have been perceiving
she may have been perceiving
we may have been perceiving
you may have been perceiving
they may have been perceiving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't perceive
you mayn't perceive
she mayn't perceive
we mayn't perceive
you mayn't perceive
they mayn't perceive 	I mayn't be perceiving
you mayn't be perceiving
she mayn't be perceiving
we mayn't be perceiving
you mayn't be perceiving
they mayn't be perceiving	I mayn't have perceived
you mayn't have perceived
she mayn't have perceived
we mayn't have perceived
you mayn't have perceived
they mayn't have perceived	I mayn't have been perceiving
you mayn't have been perceiving
she mayn't have been perceiving
we mayn't have been perceiving
you mayn't have been perceiving
they mayn't have been perceiving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I perceive?
may you perceive?
may she perceive?
may we perceive?
may you perceive?
may they perceive? 	may I be perceiving?
may you be perceiving?
may she be perceiving?
may we be perceiving?
may you be perceiving?
may they be perceiving? 	may I have perceived?
may you have perceived?
may she have perceived?
may we have perceived?
may you have perceived?
may they have perceived? 	may I have been perceiving?
may you have been perceiving?
may she have been perceiving?
may we have been perceiving?
may you have been perceiving?
may they have been perceiving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I perceive?
mayn't you perceive?
mayn't she perceive?
mayn't we perceive?
mayn't you perceive?
mayn't they perceive? 	mayn't I be perceiving?
mayn't you be perceiving?
mayn't she be perceiving?
mayn't we be perceiving?
mayn't you be perceiving?
mayn't they be perceiving? 	mayn't I have perceived?
mayn't you have perceived?
mayn't she have perceived?
mayn't we have perceived?
mayn't you have perceived?
mayn't they have perceived? 	mayn't I have been perceiving?
mayn't you have been perceiving?
mayn't she have been perceiving?
mayn't we have been perceiving?
mayn't you have been perceiving?
mayn't they have been perceiving?