English verb conjugation
MAY SHELVE

Regular verb: shelve - shelved - shelved

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?