Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may stain sth you may stain sth she may stain sth we may stain sth you may stain sth they may stain sth
V-ing form
I may be stain sthing you may be stain sthing she may be stain sthing we may be stain sthing you may be stain sthing they may be stain sthing
Perfect
I may have stain sthed you may have stain sthed she may have stain sthed we may have stain sthed you may have stain sthed they may have stain sthed
V-ing perfect
I may have been stain sthing you may have been stain sthing she may have been stain sthing we may have been stain sthing you may have been stain sthing they may have been stain sthing
Negation
Simple form
I may not stain sth you may not stain sth she may not stain sth we may not stain sth you may not stain sth they may not stain sth
V-ing form
I may not be stain sthing you may not be stain sthing she may not be stain sthing we may not be stain sthing you may not be stain sthing they may not be stain sthing
Perfect
I may not have stain sthed you may not have stain sthed she may not have stain sthed we may not have stain sthed you may not have stain sthed they may not have stain sthed
V-ing perfect
I may not have been stain sthing you may not have been stain sthing she may not have been stain sthing we may not have been stain sthing you may not have been stain sthing they may not have been stain sthing
Interrogative form
Simple form
may I stain sth? may you stain sth? may she stain sth? may we stain sth? may you stain sth? may they stain sth?
V-ing form
may I be stain sthing? may you be stain sthing? may she be stain sthing? may we be stain sthing? may you be stain sthing? may they be stain sthing?
Perfect
may I have stain sthed? may you have stain sthed? may she have stain sthed? may we have stain sthed? may you have stain sthed? may they have stain sthed?
V-ing perfect
may I have been stain sthing? may you have been stain sthing? may she have been stain sthing? may we have been stain sthing? may you have been stain sthing? may they have been stain sthing?
Interro-negative form
Simple form
may I not stain sth? may you not stain sth? may she not stain sth? may we not stain sth? may you not stain sth? may they not stain sth?
V-ing form
may I not be stain sthing? may you not be stain sthing? may she not be stain sthing? may we not be stain sthing? may you not be stain sthing? may they not be stain sthing?
Perfect
may I not have stain sthed? may you not have stain sthed? may she not have stain sthed? may we not have stain sthed? may you not have stain sthed? may they not have stain sthed?
V-ing perfect
may I not have been stain sthing? may you not have been stain sthing? may she not have been stain sthing? may we not have been stain sthing? may you not have been stain sthing? may they not have been stain sthing?