may congratulate
Regular verb: congratulate - congratulated- congratulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may congratulate
you may congratulate
she may congratulate
we may congratulate
you may congratulate
they may congratulate 	I may be congratulating
you may be congratulating
she may be congratulating
we may be congratulating
you may be congratulating
they may be congratulating	I may have congratulated
you may have congratulated
she may have congratulated
we may have congratulated
you may have congratulated
they may have congratulated	I may have been congratulating
you may have been congratulating
she may have been congratulating
we may have been congratulating
you may have been congratulating
they may have been congratulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't congratulate
you mayn't congratulate
she mayn't congratulate
we mayn't congratulate
you mayn't congratulate
they mayn't congratulate 	I mayn't be congratulating
you mayn't be congratulating
she mayn't be congratulating
we mayn't be congratulating
you mayn't be congratulating
they mayn't be congratulating	I mayn't have congratulated
you mayn't have congratulated
she mayn't have congratulated
we mayn't have congratulated
you mayn't have congratulated
they mayn't have congratulated	I mayn't have been congratulating
you mayn't have been congratulating
she mayn't have been congratulating
we mayn't have been congratulating
you mayn't have been congratulating
they mayn't have been congratulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I congratulate?
may you congratulate?
may she congratulate?
may we congratulate?
may you congratulate?
may they congratulate? 	may I be congratulating?
may you be congratulating?
may she be congratulating?
may we be congratulating?
may you be congratulating?
may they be congratulating? 	may I have congratulated?
may you have congratulated?
may she have congratulated?
may we have congratulated?
may you have congratulated?
may they have congratulated? 	may I have been congratulating?
may you have been congratulating?
may she have been congratulating?
may we have been congratulating?
may you have been congratulating?
may they have been congratulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I congratulate?
mayn't you congratulate?
mayn't she congratulate?
mayn't we congratulate?
mayn't you congratulate?
mayn't they congratulate? 	mayn't I be congratulating?
mayn't you be congratulating?
mayn't she be congratulating?
mayn't we be congratulating?
mayn't you be congratulating?
mayn't they be congratulating? 	mayn't I have congratulated?
mayn't you have congratulated?
mayn't she have congratulated?
mayn't we have congratulated?
mayn't you have congratulated?
mayn't they have congratulated? 	mayn't I have been congratulating?
mayn't you have been congratulating?
mayn't she have been congratulating?
mayn't we have been congratulating?
mayn't you have been congratulating?
mayn't they have been congratulating?