I may yelp you may yelp he may yelp we may yelp you may yelp they may yelp
V-ing form
I may be yelping you may be yelping he may be yelping we may be yelping you may be yelping they may be yelping
Perfect
I may have yelped you may have yelped he may have yelped we may have yelped you may have yelped they may have yelped
V-ing perfect
I may have been yelping you may have been yelping he may have been yelping we may have been yelping you may have been yelping they may have been yelping
Negation
Simple form
I mayn't yelp you mayn't yelp he mayn't yelp we mayn't yelp you mayn't yelp they mayn't yelp
V-ing form
I mayn't be yelping you mayn't be yelping he mayn't be yelping we mayn't be yelping you mayn't be yelping they mayn't be yelping
Perfect
I mayn't have yelped you mayn't have yelped he mayn't have yelped we mayn't have yelped you mayn't have yelped they mayn't have yelped
V-ing perfect
I mayn't have been yelping you mayn't have been yelping he mayn't have been yelping we mayn't have been yelping you mayn't have been yelping they mayn't have been yelping
Interrogative form
Simple form
may I yelp? may you yelp? may he yelp? may we yelp? may you yelp? may they yelp?
V-ing form
may I be yelping? may you be yelping? may he be yelping? may we be yelping? may you be yelping? may they be yelping?
Perfect
may I have yelped? may you have yelped? may he have yelped? may we have yelped? may you have yelped? may they have yelped?
V-ing perfect
may I have been yelping? may you have been yelping? may he have been yelping? may we have been yelping? may you have been yelping? may they have been yelping?
Interro-negative form
Simple form
mayn't I yelp? mayn't you yelp? mayn't he yelp? mayn't we yelp? mayn't you yelp? mayn't they yelp?
V-ing form
mayn't I be yelping? mayn't you be yelping? mayn't he be yelping? mayn't we be yelping? mayn't you be yelping? mayn't they be yelping?
Perfect
mayn't I have yelped? mayn't you have yelped? mayn't he have yelped? mayn't we have yelped? mayn't you have yelped? mayn't they have yelped?
V-ing perfect
mayn't I have been yelping? mayn't you have been yelping? mayn't he have been yelping? mayn't we have been yelping? mayn't you have been yelping? mayn't they have been yelping?