I should burl you should burl he should burl we should burl you should burl they should burl
V-ing form
I should be burling you should be burling he should be burling we should be burling you should be burling they should be burling
Perfect
I should have burled you should have burled he should have burled we should have burled you should have burled they should have burled
V-ing perfect
I should have been burling you should have been burling he should have been burling we should have been burling you should have been burling they should have been burling
Negation
Simple form
I should not burl you should not burl he should not burl we should not burl you should not burl they should not burl
V-ing form
I should not be burling you should not be burling he should not be burling we should not be burling you should not be burling they should not be burling
Perfect
I should not have burled you should not have burled he should not have burled we should not have burled you should not have burled they should not have burled
V-ing perfect
I should not have been burling you should not have been burling he should not have been burling we should not have been burling you should not have been burling they should not have been burling
Interrogative form
Simple form
should I burl? should you burl? should he burl? should we burl? should you burl? should they burl?
V-ing form
should I be burling? should you be burling? should he be burling? should we be burling? should you be burling? should they be burling?
Perfect
should I have burled? should you have burled? should he have burled? should we have burled? should you have burled? should they have burled?
V-ing perfect
should I have been burling? should you have been burling? should he have been burling? should we have been burling? should you have been burling? should they have been burling?
Interro-negative form
Simple form
should I not burl? should you not burl? should he not burl? should we not burl? should you not burl? should they not burl?
V-ing form
should I not be burling? should you not be burling? should he not be burling? should we not be burling? should you not be burling? should they not be burling?
Perfect
should I not have burled? should you not have burled? should he not have burled? should we not have burled? should you not have burled? should they not have burled?
V-ing perfect
should I not have been burling? should you not have been burling? should he not have been burling? should we not have been burling? should you not have been burling? should they not have been burling?