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