may jam
Regular verb: jam - jammed- jammed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may jam
you may jam
he may jam
we may jam
you may jam
they may jam 	I may be jamming
you may be jamming
he may be jamming
we may be jamming
you may be jamming
they may be jamming	I may have jammed
you may have jammed
he may have jammed
we may have jammed
you may have jammed
they may have jammed	I may have been jamming
you may have been jamming
he may have been jamming
we may have been jamming
you may have been jamming
they may have been jamming	

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

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