I may jam you may jam she may jam we may jam you may jam they may jam
V-ing form
I may be jamming you may be jamming she may be jamming we may be jamming you may be jamming they may be jamming
Perfect
I may have jammed you may have jammed she may have jammed we may have jammed you may have jammed they may have jammed
V-ing perfect
I may have been jamming you may have been jamming she may have been jamming we may have been jamming you may have been jamming they may have been jamming
Negation
Simple form
I mayn't jam you mayn't jam she mayn't jam we mayn't jam you mayn't jam they mayn't jam
V-ing form
I mayn't be jamming you mayn't be jamming she mayn't be jamming we mayn't be jamming you mayn't be jamming they mayn't be jamming
Perfect
I mayn't have jammed you mayn't have jammed she mayn't have jammed we mayn't have jammed you mayn't have jammed they mayn't have jammed
V-ing perfect
I mayn't have been jamming you mayn't have been jamming she mayn't have been jamming we mayn't have been jamming you mayn't have been jamming they mayn't have been jamming
Interrogative form
Simple form
may I jam? may you jam? may she jam? may we jam? may you jam? may they jam?
V-ing form
may I be jamming? may you be jamming? may she be jamming? may we be jamming? may you be jamming? may they be jamming?
Perfect
may I have jammed? may you have jammed? may she have jammed? may we have jammed? may you have jammed? may they have jammed?
V-ing perfect
may I have been jamming? may you have been jamming? may she have been jamming? may we have been jamming? may you have been jamming? may they have been jamming?
Interro-negative form
Simple form
mayn't I jam? mayn't you jam? mayn't she jam? mayn't we jam? mayn't you jam? mayn't they jam?
V-ing form
mayn't I be jamming? mayn't you be jamming? mayn't she be jamming? mayn't we be jamming? mayn't you be jamming? mayn't they be jamming?
Perfect
mayn't I have jammed? mayn't you have jammed? mayn't she have jammed? mayn't we have jammed? mayn't you have jammed? mayn't they have jammed?
V-ing perfect
mayn't I have been jamming? mayn't you have been jamming? mayn't she have been jamming? mayn't we have been jamming? mayn't you have been jamming? mayn't they have been jamming?