English verb conjugation
SHOULD PREWARN

Regular verb: prewarn - prewarned - prewarned

Affirmation

Simple form	V-ing form
I should prewarn you should prewarn she should prewarn we should prewarn you should prewarn they should prewarn	I should be prewarning you should be prewarning she should be prewarning we should be prewarning you should be prewarning they should be prewarning
Perfect	V-ing perfect
I should have prewarned you should have prewarned she should have prewarned we should have prewarned you should have prewarned they should have prewarned	I should have been prewarning you should have been prewarning she should have been prewarning we should have been prewarning you should have been prewarning they should have been prewarning

Negation

Simple form	V-ing form
I should not prewarn you should not prewarn she should not prewarn we should not prewarn you should not prewarn they should not prewarn	I should not be prewarning you should not be prewarning she should not be prewarning we should not be prewarning you should not be prewarning they should not be prewarning
Perfect	V-ing perfect
I should not have prewarned you should not have prewarned she should not have prewarned we should not have prewarned you should not have prewarned they should not have prewarned	I should not have been prewarning you should not have been prewarning she should not have been prewarning we should not have been prewarning you should not have been prewarning they should not have been prewarning

Interrogative form

Simple form	V-ing form
should I prewarn? should you prewarn? should she prewarn? should we prewarn? should you prewarn? should they prewarn?	should I be prewarning? should you be prewarning? should she be prewarning? should we be prewarning? should you be prewarning? should they be prewarning?
Perfect	V-ing perfect
should I have prewarned? should you have prewarned? should she have prewarned? should we have prewarned? should you have prewarned? should they have prewarned?	should I have been prewarning? should you have been prewarning? should she have been prewarning? should we have been prewarning? should you have been prewarning? should they have been prewarning?

Interro-negative form

Simple form	V-ing form
should I not prewarn? should you not prewarn? should she not prewarn? should we not prewarn? should you not prewarn? should they not prewarn?	should I not be prewarning? should you not be prewarning? should she not be prewarning? should we not be prewarning? should you not be prewarning? should they not be prewarning?
Perfect	V-ing perfect
should I not have prewarned? should you not have prewarned? should she not have prewarned? should we not have prewarned? should you not have prewarned? should they not have prewarned?	should I not have been prewarning? should you not have been prewarning? should she not have been prewarning? should we not have been prewarning? should you not have been prewarning? should they not have been prewarning?