may cross
Regular verb: cross - crossed- crossed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may cross
you may cross
she may cross
we may cross
you may cross
they may cross 	I may be crossing
you may be crossing
she may be crossing
we may be crossing
you may be crossing
they may be crossing	I may have crossed
you may have crossed
she may have crossed
we may have crossed
you may have crossed
they may have crossed	I may have been crossing
you may have been crossing
she may have been crossing
we may have been crossing
you may have been crossing
they may have been crossing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't cross
you mayn't cross
she mayn't cross
we mayn't cross
you mayn't cross
they mayn't cross 	I mayn't be crossing
you mayn't be crossing
she mayn't be crossing
we mayn't be crossing
you mayn't be crossing
they mayn't be crossing	I mayn't have crossed
you mayn't have crossed
she mayn't have crossed
we mayn't have crossed
you mayn't have crossed
they mayn't have crossed	I mayn't have been crossing
you mayn't have been crossing
she mayn't have been crossing
we mayn't have been crossing
you mayn't have been crossing
they mayn't have been crossing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I cross?
may you cross?
may she cross?
may we cross?
may you cross?
may they cross? 	may I be crossing?
may you be crossing?
may she be crossing?
may we be crossing?
may you be crossing?
may they be crossing? 	may I have crossed?
may you have crossed?
may she have crossed?
may we have crossed?
may you have crossed?
may they have crossed? 	may I have been crossing?
may you have been crossing?
may she have been crossing?
may we have been crossing?
may you have been crossing?
may they have been crossing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I cross?
mayn't you cross?
mayn't she cross?
mayn't we cross?
mayn't you cross?
mayn't they cross? 	mayn't I be crossing?
mayn't you be crossing?
mayn't she be crossing?
mayn't we be crossing?
mayn't you be crossing?
mayn't they be crossing? 	mayn't I have crossed?
mayn't you have crossed?
mayn't she have crossed?
mayn't we have crossed?
mayn't you have crossed?
mayn't they have crossed? 	mayn't I have been crossing?
mayn't you have been crossing?
mayn't she have been crossing?
mayn't we have been crossing?
mayn't you have been crossing?
mayn't they have been crossing?