may datestamp
Regular verb: datestamp - datestamped- datestamped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may datestamp
you may datestamp
he may datestamp
we may datestamp
you may datestamp
they may datestamp 	I may be datestamping
you may be datestamping
he may be datestamping
we may be datestamping
you may be datestamping
they may be datestamping	I may have datestamped
you may have datestamped
he may have datestamped
we may have datestamped
you may have datestamped
they may have datestamped	I may have been datestamping
you may have been datestamping
he may have been datestamping
we may have been datestamping
you may have been datestamping
they may have been datestamping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't datestamp
you mayn't datestamp
he mayn't datestamp
we mayn't datestamp
you mayn't datestamp
they mayn't datestamp 	I mayn't be datestamping
you mayn't be datestamping
he mayn't be datestamping
we mayn't be datestamping
you mayn't be datestamping
they mayn't be datestamping	I mayn't have datestamped
you mayn't have datestamped
he mayn't have datestamped
we mayn't have datestamped
you mayn't have datestamped
they mayn't have datestamped	I mayn't have been datestamping
you mayn't have been datestamping
he mayn't have been datestamping
we mayn't have been datestamping
you mayn't have been datestamping
they mayn't have been datestamping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I datestamp?
may you datestamp?
may he datestamp?
may we datestamp?
may you datestamp?
may they datestamp? 	may I be datestamping?
may you be datestamping?
may he be datestamping?
may we be datestamping?
may you be datestamping?
may they be datestamping? 	may I have datestamped?
may you have datestamped?
may he have datestamped?
may we have datestamped?
may you have datestamped?
may they have datestamped? 	may I have been datestamping?
may you have been datestamping?
may he have been datestamping?
may we have been datestamping?
may you have been datestamping?
may they have been datestamping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I datestamp?
mayn't you datestamp?
mayn't he datestamp?
mayn't we datestamp?
mayn't you datestamp?
mayn't they datestamp? 	mayn't I be datestamping?
mayn't you be datestamping?
mayn't he be datestamping?
mayn't we be datestamping?
mayn't you be datestamping?
mayn't they be datestamping? 	mayn't I have datestamped?
mayn't you have datestamped?
mayn't he have datestamped?
mayn't we have datestamped?
mayn't you have datestamped?
mayn't they have datestamped? 	mayn't I have been datestamping?
mayn't you have been datestamping?
mayn't he have been datestamping?
mayn't we have been datestamping?
mayn't you have been datestamping?
mayn't they have been datestamping?