may cross-react
Regular verb: cross-react - cross-reacted- cross-reacted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may cross-react
you may cross-react
he may cross-react
we may cross-react
you may cross-react
they may cross-react 	I may be cross-reacting
you may be cross-reacting
he may be cross-reacting
we may be cross-reacting
you may be cross-reacting
they may be cross-reacting	I may have cross-reacted
you may have cross-reacted
he may have cross-reacted
we may have cross-reacted
you may have cross-reacted
they may have cross-reacted	I may have been cross-reacting
you may have been cross-reacting
he may have been cross-reacting
we may have been cross-reacting
you may have been cross-reacting
they may have been cross-reacting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't cross-react
you mayn't cross-react
he mayn't cross-react
we mayn't cross-react
you mayn't cross-react
they mayn't cross-react 	I mayn't be cross-reacting
you mayn't be cross-reacting
he mayn't be cross-reacting
we mayn't be cross-reacting
you mayn't be cross-reacting
they mayn't be cross-reacting	I mayn't have cross-reacted
you mayn't have cross-reacted
he mayn't have cross-reacted
we mayn't have cross-reacted
you mayn't have cross-reacted
they mayn't have cross-reacted	I mayn't have been cross-reacting
you mayn't have been cross-reacting
he mayn't have been cross-reacting
we mayn't have been cross-reacting
you mayn't have been cross-reacting
they mayn't have been cross-reacting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I cross-react?
may you cross-react?
may he cross-react?
may we cross-react?
may you cross-react?
may they cross-react? 	may I be cross-reacting?
may you be cross-reacting?
may he be cross-reacting?
may we be cross-reacting?
may you be cross-reacting?
may they be cross-reacting? 	may I have cross-reacted?
may you have cross-reacted?
may he have cross-reacted?
may we have cross-reacted?
may you have cross-reacted?
may they have cross-reacted? 	may I have been cross-reacting?
may you have been cross-reacting?
may he have been cross-reacting?
may we have been cross-reacting?
may you have been cross-reacting?
may they have been cross-reacting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I cross-react?
mayn't you cross-react?
mayn't he cross-react?
mayn't we cross-react?
mayn't you cross-react?
mayn't they cross-react? 	mayn't I be cross-reacting?
mayn't you be cross-reacting?
mayn't he be cross-reacting?
mayn't we be cross-reacting?
mayn't you be cross-reacting?
mayn't they be cross-reacting? 	mayn't I have cross-reacted?
mayn't you have cross-reacted?
mayn't he have cross-reacted?
mayn't we have cross-reacted?
mayn't you have cross-reacted?
mayn't they have cross-reacted? 	mayn't I have been cross-reacting?
mayn't you have been cross-reacting?
mayn't he have been cross-reacting?
mayn't we have been cross-reacting?
mayn't you have been cross-reacting?
mayn't they have been cross-reacting?