English verb conjugation
MAY HARDEN

Regular verb: harden - hardened - hardened

Affirmation

Simple form	V-ing form
I may harden you may harden he may harden we may harden you may harden they may harden	I may be hardening you may be hardening he may be hardening we may be hardening you may be hardening they may be hardening
Perfect	V-ing perfect
I may have hardened you may have hardened he may have hardened we may have hardened you may have hardened they may have hardened	I may have been hardening you may have been hardening he may have been hardening we may have been hardening you may have been hardening they may have been hardening

Negation

Simple form	V-ing form
I mayn't harden you mayn't harden he mayn't harden we mayn't harden you mayn't harden they mayn't harden	I mayn't be hardening you mayn't be hardening he mayn't be hardening we mayn't be hardening you mayn't be hardening they mayn't be hardening
Perfect	V-ing perfect
I mayn't have hardened you mayn't have hardened he mayn't have hardened we mayn't have hardened you mayn't have hardened they mayn't have hardened	I mayn't have been hardening you mayn't have been hardening he mayn't have been hardening we mayn't have been hardening you mayn't have been hardening they mayn't have been hardening

Interrogative form

Simple form	V-ing form
may I harden? may you harden? may he harden? may we harden? may you harden? may they harden?	may I be hardening? may you be hardening? may he be hardening? may we be hardening? may you be hardening? may they be hardening?
Perfect	V-ing perfect
may I have hardened? may you have hardened? may he have hardened? may we have hardened? may you have hardened? may they have hardened?	may I have been hardening? may you have been hardening? may he have been hardening? may we have been hardening? may you have been hardening? may they have been hardening?

Interro-negative form

Simple form	V-ing form
mayn't I harden? mayn't you harden? mayn't he harden? mayn't we harden? mayn't you harden? mayn't they harden?	mayn't I be hardening? mayn't you be hardening? mayn't he be hardening? mayn't we be hardening? mayn't you be hardening? mayn't they be hardening?
Perfect	V-ing perfect
mayn't I have hardened? mayn't you have hardened? mayn't he have hardened? mayn't we have hardened? mayn't you have hardened? mayn't they have hardened?	mayn't I have been hardening? mayn't you have been hardening? mayn't he have been hardening? mayn't we have been hardening? mayn't you have been hardening? mayn't they have been hardening?