I may perk you may perk she may perk we may perk you may perk they may perk
V-ing form
I may be perking you may be perking she may be perking we may be perking you may be perking they may be perking
Perfect
I may have perked you may have perked she 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 she may have been perking we may have been perking you may have been perking they may have been perking
Negation
Simple form
I may not perk you may not perk she may not perk we may not perk you may not perk they may not perk
V-ing form
I may not be perking you may not be perking she may not be perking we may not be perking you may not be perking they may not be perking
Perfect
I may not have perked you may not have perked she may not have perked we may not have perked you may not have perked they may not have perked
V-ing perfect
I may not have been perking you may not have been perking she may not have been perking we may not have been perking you may not have been perking they may not have been perking
Interrogative form
Simple form
may I perk? may you perk? may she perk? may we perk? may you perk? may they perk?
V-ing form
may I be perking? may you be perking? may she be perking? may we be perking? may you be perking? may they be perking?
Perfect
may I have perked? may you have perked? may she 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 she have been perking? may we have been perking? may you have been perking? may they have been perking?
Interro-negative form
Simple form
may I not perk? may you not perk? may she not perk? may we not perk? may you not perk? may they not perk?
V-ing form
may I not be perking? may you not be perking? may she not be perking? may we not be perking? may you not be perking? may they not be perking?
Perfect
may I not have perked? may you not have perked? may she not have perked? may we not have perked? may you not have perked? may they not have perked?
V-ing perfect
may I not have been perking? may you not have been perking? may she not have been perking? may we not have been perking? may you not have been perking? may they not have been perking?