may titter
Regular verb: titter - tittered- tittered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may titter
you may titter
he may titter
we may titter
you may titter
they may titter 	I may be tittering
you may be tittering
he may be tittering
we may be tittering
you may be tittering
they may be tittering	I may have tittered
you may have tittered
he may have tittered
we may have tittered
you may have tittered
they may have tittered	I may have been tittering
you may have been tittering
he may have been tittering
we may have been tittering
you may have been tittering
they may have been tittering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't titter
you mayn't titter
he mayn't titter
we mayn't titter
you mayn't titter
they mayn't titter 	I mayn't be tittering
you mayn't be tittering
he mayn't be tittering
we mayn't be tittering
you mayn't be tittering
they mayn't be tittering	I mayn't have tittered
you mayn't have tittered
he mayn't have tittered
we mayn't have tittered
you mayn't have tittered
they mayn't have tittered	I mayn't have been tittering
you mayn't have been tittering
he mayn't have been tittering
we mayn't have been tittering
you mayn't have been tittering
they mayn't have been tittering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I titter?
may you titter?
may he titter?
may we titter?
may you titter?
may they titter? 	may I be tittering?
may you be tittering?
may he be tittering?
may we be tittering?
may you be tittering?
may they be tittering? 	may I have tittered?
may you have tittered?
may he have tittered?
may we have tittered?
may you have tittered?
may they have tittered? 	may I have been tittering?
may you have been tittering?
may he have been tittering?
may we have been tittering?
may you have been tittering?
may they have been tittering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I titter?
mayn't you titter?
mayn't he titter?
mayn't we titter?
mayn't you titter?
mayn't they titter? 	mayn't I be tittering?
mayn't you be tittering?
mayn't he be tittering?
mayn't we be tittering?
mayn't you be tittering?
mayn't they be tittering? 	mayn't I have tittered?
mayn't you have tittered?
mayn't he have tittered?
mayn't we have tittered?
mayn't you have tittered?
mayn't they have tittered? 	mayn't I have been tittering?
mayn't you have been tittering?
mayn't he have been tittering?
mayn't we have been tittering?
mayn't you have been tittering?
mayn't they have been tittering?