I should arch you should arch he should arch we should arch you should arch they should arch
V-ing form
I should be arching you should be arching he should be arching we should be arching you should be arching they should be arching
Perfect
I should have arched you should have arched he should have arched we should have arched you should have arched they should have arched
V-ing perfect
I should have been arching you should have been arching he should have been arching we should have been arching you should have been arching they should have been arching
Negation
Simple form
I should not arch you should not arch he should not arch we should not arch you should not arch they should not arch
V-ing form
I should not be arching you should not be arching he should not be arching we should not be arching you should not be arching they should not be arching
Perfect
I should not have arched you should not have arched he should not have arched we should not have arched you should not have arched they should not have arched
V-ing perfect
I should not have been arching you should not have been arching he should not have been arching we should not have been arching you should not have been arching they should not have been arching
Interrogative form
Simple form
should I arch? should you arch? should he arch? should we arch? should you arch? should they arch?
V-ing form
should I be arching? should you be arching? should he be arching? should we be arching? should you be arching? should they be arching?
Perfect
should I have arched? should you have arched? should he have arched? should we have arched? should you have arched? should they have arched?
V-ing perfect
should I have been arching? should you have been arching? should he have been arching? should we have been arching? should you have been arching? should they have been arching?
Interro-negative form
Simple form
should I not arch? should you not arch? should he not arch? should we not arch? should you not arch? should they not arch?
V-ing form
should I not be arching? should you not be arching? should he not be arching? should we not be arching? should you not be arching? should they not be arching?
Perfect
should I not have arched? should you not have arched? should he not have arched? should we not have arched? should you not have arched? should they not have arched?
V-ing perfect
should I not have been arching? should you not have been arching? should he not have been arching? should we not have been arching? should you not have been arching? should they not have been arching?