I may powder you may powder he may powder we may powder you may powder they may powder
V-ing form
I may be powdering you may be powdering he may be powdering we may be powdering you may be powdering they may be powdering
Perfect
I may have powdered you may have powdered he may have powdered we may have powdered you may have powdered they may have powdered
V-ing perfect
I may have been powdering you may have been powdering he may have been powdering we may have been powdering you may have been powdering they may have been powdering
Negation
Simple form
I may not powder you may not powder he may not powder we may not powder you may not powder they may not powder
V-ing form
I may not be powdering you may not be powdering he may not be powdering we may not be powdering you may not be powdering they may not be powdering
Perfect
I may not have powdered you may not have powdered he may not have powdered we may not have powdered you may not have powdered they may not have powdered
V-ing perfect
I may not have been powdering you may not have been powdering he may not have been powdering we may not have been powdering you may not have been powdering they may not have been powdering
Interrogative form
Simple form
may I powder? may you powder? may he powder? may we powder? may you powder? may they powder?
V-ing form
may I be powdering? may you be powdering? may he be powdering? may we be powdering? may you be powdering? may they be powdering?
Perfect
may I have powdered? may you have powdered? may he have powdered? may we have powdered? may you have powdered? may they have powdered?
V-ing perfect
may I have been powdering? may you have been powdering? may he have been powdering? may we have been powdering? may you have been powdering? may they have been powdering?
Interro-negative form
Simple form
may I not powder? may you not powder? may he not powder? may we not powder? may you not powder? may they not powder?
V-ing form
may I not be powdering? may you not be powdering? may he not be powdering? may we not be powdering? may you not be powdering? may they not be powdering?
Perfect
may I not have powdered? may you not have powdered? may he not have powdered? may we not have powdered? may you not have powdered? may they not have powdered?
V-ing perfect
may I not have been powdering? may you not have been powdering? may he not have been powdering? may we not have been powdering? may you not have been powdering? may they not have been powdering?