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