English verb conjugation
MAY PRESHARPEN

Regular verb: presharpen - presharpened - presharpened

Affirmation

Simple form	V-ing form
I may presharpen you may presharpen he may presharpen we may presharpen you may presharpen they may presharpen	I may be presharpening you may be presharpening he may be presharpening we may be presharpening you may be presharpening they may be presharpening
Perfect	V-ing perfect
I may have presharpened you may have presharpened he may have presharpened we may have presharpened you may have presharpened they may have presharpened	I may have been presharpening you may have been presharpening he may have been presharpening we may have been presharpening you may have been presharpening they may have been presharpening

Negation

Simple form	V-ing form
I mayn't presharpen you mayn't presharpen he mayn't presharpen we mayn't presharpen you mayn't presharpen they mayn't presharpen	I mayn't be presharpening you mayn't be presharpening he mayn't be presharpening we mayn't be presharpening you mayn't be presharpening they mayn't be presharpening
Perfect	V-ing perfect
I mayn't have presharpened you mayn't have presharpened he mayn't have presharpened we mayn't have presharpened you mayn't have presharpened they mayn't have presharpened	I mayn't have been presharpening you mayn't have been presharpening he mayn't have been presharpening we mayn't have been presharpening you mayn't have been presharpening they mayn't have been presharpening

Interrogative form

Simple form	V-ing form
may I presharpen? may you presharpen? may he presharpen? may we presharpen? may you presharpen? may they presharpen?	may I be presharpening? may you be presharpening? may he be presharpening? may we be presharpening? may you be presharpening? may they be presharpening?
Perfect	V-ing perfect
may I have presharpened? may you have presharpened? may he have presharpened? may we have presharpened? may you have presharpened? may they have presharpened?	may I have been presharpening? may you have been presharpening? may he have been presharpening? may we have been presharpening? may you have been presharpening? may they have been presharpening?

Interro-negative form

Simple form	V-ing form
mayn't I presharpen? mayn't you presharpen? mayn't he presharpen? mayn't we presharpen? mayn't you presharpen? mayn't they presharpen?	mayn't I be presharpening? mayn't you be presharpening? mayn't he be presharpening? mayn't we be presharpening? mayn't you be presharpening? mayn't they be presharpening?
Perfect	V-ing perfect
mayn't I have presharpened? mayn't you have presharpened? mayn't he have presharpened? mayn't we have presharpened? mayn't you have presharpened? mayn't they have presharpened?	mayn't I have been presharpening? mayn't you have been presharpening? mayn't he have been presharpening? mayn't we have been presharpening? mayn't you have been presharpening? mayn't they have been presharpening?