I should pet you should pet she should pet we should pet you should pet they should pet
V-ing form
I should be petting you should be petting she should be petting we should be petting you should be petting they should be petting
Perfect
I should have petted you should have petted she should have petted we should have petted you should have petted they should have petted
V-ing perfect
I should have been petting you should have been petting she should have been petting we should have been petting you should have been petting they should have been petting
Negation
Simple form
I should not pet you should not pet she should not pet we should not pet you should not pet they should not pet
V-ing form
I should not be petting you should not be petting she should not be petting we should not be petting you should not be petting they should not be petting
Perfect
I should not have petted you should not have petted she should not have petted we should not have petted you should not have petted they should not have petted
V-ing perfect
I should not have been petting you should not have been petting she should not have been petting we should not have been petting you should not have been petting they should not have been petting
Interrogative form
Simple form
should I pet? should you pet? should she pet? should we pet? should you pet? should they pet?
V-ing form
should I be petting? should you be petting? should she be petting? should we be petting? should you be petting? should they be petting?
Perfect
should I have petted? should you have petted? should she have petted? should we have petted? should you have petted? should they have petted?
V-ing perfect
should I have been petting? should you have been petting? should she have been petting? should we have been petting? should you have been petting? should they have been petting?
Interro-negative form
Simple form
should I not pet? should you not pet? should she not pet? should we not pet? should you not pet? should they not pet?
V-ing form
should I not be petting? should you not be petting? should she not be petting? should we not be petting? should you not be petting? should they not be petting?
Perfect
should I not have petted? should you not have petted? should she not have petted? should we not have petted? should you not have petted? should they not have petted?
V-ing perfect
should I not have been petting? should you not have been petting? should she not have been petting? should we not have been petting? should you not have been petting? should they not have been petting?