English verb conjugation
MAY KNIFE

Regular verb: knife - knifed - knifed

Affirmation

Simple form	V-ing form
I may knife you may knife he may knife we may knife you may knife they may knife	I may be knifing you may be knifing he may be knifing we may be knifing you may be knifing they may be knifing
Perfect	V-ing perfect
I may have knifed you may have knifed he may have knifed we may have knifed you may have knifed they may have knifed	I may have been knifing you may have been knifing he may have been knifing we may have been knifing you may have been knifing they may have been knifing

Negation

Simple form	V-ing form
I may not knife you may not knife he may not knife we may not knife you may not knife they may not knife	I may not be knifing you may not be knifing he may not be knifing we may not be knifing you may not be knifing they may not be knifing
Perfect	V-ing perfect
I may not have knifed you may not have knifed he may not have knifed we may not have knifed you may not have knifed they may not have knifed	I may not have been knifing you may not have been knifing he may not have been knifing we may not have been knifing you may not have been knifing they may not have been knifing

Interrogative form

Simple form	V-ing form
may I knife? may you knife? may he knife? may we knife? may you knife? may they knife?	may I be knifing? may you be knifing? may he be knifing? may we be knifing? may you be knifing? may they be knifing?
Perfect	V-ing perfect
may I have knifed? may you have knifed? may he have knifed? may we have knifed? may you have knifed? may they have knifed?	may I have been knifing? may you have been knifing? may he have been knifing? may we have been knifing? may you have been knifing? may they have been knifing?

Interro-negative form

Simple form	V-ing form
may I not knife? may you not knife? may he not knife? may we not knife? may you not knife? may they not knife?	may I not be knifing? may you not be knifing? may he not be knifing? may we not be knifing? may you not be knifing? may they not be knifing?
Perfect	V-ing perfect
may I not have knifed? may you not have knifed? may he not have knifed? may we not have knifed? may you not have knifed? may they not have knifed?	may I not have been knifing? may you not have been knifing? may he not have been knifing? may we not have been knifing? may you not have been knifing? may they not have been knifing?