English verb conjugation
SHOULD KNIFE

Regular verb: knife - knifed - knifed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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