English verb conjugation
SHOULD RETCH

Regular verb: retch - retched - retched

Affirmation

Simple form	V-ing form
I should retch you should retch she should retch we should retch you should retch they should retch	I should be retching you should be retching she should be retching we should be retching you should be retching they should be retching
Perfect	V-ing perfect
I should have retched you should have retched she should have retched we should have retched you should have retched they should have retched	I should have been retching you should have been retching she should have been retching we should have been retching you should have been retching they should have been retching

Negation

Simple form	V-ing form
I should not retch you should not retch she should not retch we should not retch you should not retch they should not retch	I should not be retching you should not be retching she should not be retching we should not be retching you should not be retching they should not be retching
Perfect	V-ing perfect
I should not have retched you should not have retched she should not have retched we should not have retched you should not have retched they should not have retched	I should not have been retching you should not have been retching she should not have been retching we should not have been retching you should not have been retching they should not have been retching

Interrogative form

Simple form	V-ing form
should I retch? should you retch? should she retch? should we retch? should you retch? should they retch?	should I be retching? should you be retching? should she be retching? should we be retching? should you be retching? should they be retching?
Perfect	V-ing perfect
should I have retched? should you have retched? should she have retched? should we have retched? should you have retched? should they have retched?	should I have been retching? should you have been retching? should she have been retching? should we have been retching? should you have been retching? should they have been retching?

Interro-negative form

Simple form	V-ing form
should I not retch? should you not retch? should she not retch? should we not retch? should you not retch? should they not retch?	should I not be retching? should you not be retching? should she not be retching? should we not be retching? should you not be retching? should they not be retching?
Perfect	V-ing perfect
should I not have retched? should you not have retched? should she not have retched? should we not have retched? should you not have retched? should they not have retched?	should I not have been retching? should you not have been retching? should she not have been retching? should we not have been retching? should you not have been retching? should they not have been retching?