should undermine
Regular verb: undermine - undermined- undermined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should undermine
you should undermine
she should undermine
we should undermine
you should undermine
they should undermine 	I should be undermining
you should be undermining
she should be undermining
we should be undermining
you should be undermining
they should be undermining	I should have undermined
you should have undermined
she should have undermined
we should have undermined
you should have undermined
they should have undermined	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 	V-ing form 	Perfect 	V-ing perfect 	
I should not undermine
you should not undermine
she should not undermine
we should not undermine
you should not undermine
they should not undermine 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
should I undermine?
should you undermine?
should she undermine?
should we undermine?
should you undermine?
should they undermine? 	should I be undermining?
should you be undermining?
should she be undermining?
should we be undermining?
should you be undermining?
should they be undermining? 	should I have undermined?
should you have undermined?
should she have undermined?
should we have undermined?
should you have undermined?
should they have undermined? 	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 	V-ing form 	Perfect 	V-ing perfect 	
should I not undermine?
should you not undermine?
should she not undermine?
should we not undermine?
should you not undermine?
should they not undermine? 	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? 	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? 	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?