English verb conjugation
MAY WATERPROOF

Regular verb: waterproof - waterproofed - waterproofed

Affirmation

Simple form	V-ing form
I may waterproof you may waterproof she may waterproof we may waterproof you may waterproof they may waterproof	I may be waterproofing you may be waterproofing she may be waterproofing we may be waterproofing you may be waterproofing they may be waterproofing
Perfect	V-ing perfect
I may have waterproofed you may have waterproofed she may have waterproofed we may have waterproofed you may have waterproofed they may have waterproofed	I may have been waterproofing you may have been waterproofing she may have been waterproofing we may have been waterproofing you may have been waterproofing they may have been waterproofing

Negation

Simple form	V-ing form
I mayn't waterproof you mayn't waterproof she mayn't waterproof we mayn't waterproof you mayn't waterproof they mayn't waterproof	I mayn't be waterproofing you mayn't be waterproofing she mayn't be waterproofing we mayn't be waterproofing you mayn't be waterproofing they mayn't be waterproofing
Perfect	V-ing perfect
I mayn't have waterproofed you mayn't have waterproofed she mayn't have waterproofed we mayn't have waterproofed you mayn't have waterproofed they mayn't have waterproofed	I mayn't have been waterproofing you mayn't have been waterproofing she mayn't have been waterproofing we mayn't have been waterproofing you mayn't have been waterproofing they mayn't have been waterproofing

Interrogative form

Simple form	V-ing form
may I waterproof? may you waterproof? may she waterproof? may we waterproof? may you waterproof? may they waterproof?	may I be waterproofing? may you be waterproofing? may she be waterproofing? may we be waterproofing? may you be waterproofing? may they be waterproofing?
Perfect	V-ing perfect
may I have waterproofed? may you have waterproofed? may she have waterproofed? may we have waterproofed? may you have waterproofed? may they have waterproofed?	may I have been waterproofing? may you have been waterproofing? may she have been waterproofing? may we have been waterproofing? may you have been waterproofing? may they have been waterproofing?

Interro-negative form

Simple form	V-ing form
mayn't I waterproof? mayn't you waterproof? mayn't she waterproof? mayn't we waterproof? mayn't you waterproof? mayn't they waterproof?	mayn't I be waterproofing? mayn't you be waterproofing? mayn't she be waterproofing? mayn't we be waterproofing? mayn't you be waterproofing? mayn't they be waterproofing?
Perfect	V-ing perfect
mayn't I have waterproofed? mayn't you have waterproofed? mayn't she have waterproofed? mayn't we have waterproofed? mayn't you have waterproofed? mayn't they have waterproofed?	mayn't I have been waterproofing? mayn't you have been waterproofing? mayn't she have been waterproofing? mayn't we have been waterproofing? mayn't you have been waterproofing? mayn't they have been waterproofing?