may shelve
Regular verb: shelve - shelved- shelved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may shelve
you may shelve
he may shelve
we may shelve
you may shelve
they may shelve 	I may be shelving
you may be shelving
he may be shelving
we may be shelving
you may be shelving
they may be shelving	I may have shelved
you may have shelved
he may have shelved
we may have shelved
you may have shelved
they may have shelved	I may have been shelving
you may have been shelving
he may have been shelving
we may have been shelving
you may have been shelving
they may have been shelving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't shelve
you mayn't shelve
he mayn't shelve
we mayn't shelve
you mayn't shelve
they mayn't shelve 	I mayn't be shelving
you mayn't be shelving
he mayn't be shelving
we mayn't be shelving
you mayn't be shelving
they mayn't be shelving	I mayn't have shelved
you mayn't have shelved
he mayn't have shelved
we mayn't have shelved
you mayn't have shelved
they mayn't have shelved	I mayn't have been shelving
you mayn't have been shelving
he mayn't have been shelving
we mayn't have been shelving
you mayn't have been shelving
they mayn't have been shelving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I shelve?
may you shelve?
may he shelve?
may we shelve?
may you shelve?
may they shelve? 	may I be shelving?
may you be shelving?
may he be shelving?
may we be shelving?
may you be shelving?
may they be shelving? 	may I have shelved?
may you have shelved?
may he have shelved?
may we have shelved?
may you have shelved?
may they have shelved? 	may I have been shelving?
may you have been shelving?
may he have been shelving?
may we have been shelving?
may you have been shelving?
may they have been shelving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I shelve?
mayn't you shelve?
mayn't he shelve?
mayn't we shelve?
mayn't you shelve?
mayn't they shelve? 	mayn't I be shelving?
mayn't you be shelving?
mayn't he be shelving?
mayn't we be shelving?
mayn't you be shelving?
mayn't they be shelving? 	mayn't I have shelved?
mayn't you have shelved?
mayn't he have shelved?
mayn't we have shelved?
mayn't you have shelved?
mayn't they have shelved? 	mayn't I have been shelving?
mayn't you have been shelving?
mayn't he have been shelving?
mayn't we have been shelving?
mayn't you have been shelving?
mayn't they have been shelving?