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