I should undermine you should undermine she should undermine we should undermine you should undermine they should undermine
V-ing form
I should be undermining you should be undermining she should be undermining we should be undermining you should be undermining they should be undermining
Perfect
I should have undermined you should have undermined she should have undermined we should have undermined you should have undermined they should have undermined
V-ing perfect
I should have been undermining you should have been undermining she should have been undermining we should have been undermining you should have been undermining they should have been undermining
Negation
Simple form
I should not undermine you should not undermine she should not undermine we should not undermine you should not undermine they should not undermine
V-ing form
I should not be undermining you should not be undermining she should not be undermining we should not be undermining you should not be undermining they should not be undermining
Perfect
I should not have undermined you should not have undermined she should not have undermined we should not have undermined you should not have undermined they should not have undermined
V-ing perfect
I should not have been undermining you should not have been undermining she should not have been undermining we should not have been undermining you should not have been undermining they should not have been undermining
Interrogative form
Simple form
should I undermine? should you undermine? should she undermine? should we undermine? should you undermine? should they undermine?
V-ing form
should I be undermining? should you be undermining? should she be undermining? should we be undermining? should you be undermining? should they be undermining?
Perfect
should I have undermined? should you have undermined? should she have undermined? should we have undermined? should you have undermined? should they have undermined?
V-ing perfect
should I have been undermining? should you have been undermining? should she have been undermining? should we have been undermining? should you have been undermining? should they have been undermining?
Interro-negative form
Simple form
should I not undermine? should you not undermine? should she not undermine? should we not undermine? should you not undermine? should they not undermine?
V-ing form
should I not be undermining? should you not be undermining? should she not be undermining? should we not be undermining? should you not be undermining? should they not be undermining?
Perfect
should I not have undermined? should you not have undermined? should she not have undermined? should we not have undermined? should you not have undermined? should they not have undermined?
V-ing perfect
should I not have been undermining? should you not have been undermining? should she not have been undermining? should we not have been undermining? should you not have been undermining? should they not have been undermining?