English verb conjugation
MAY STAIN

Regular verb: stain - stained - stained

Affirmation

Simple form	V-ing form
I may stain you may stain she may stain we may stain you may stain they may stain	I may be staining you may be staining she may be staining we may be staining you may be staining they may be staining
Perfect	V-ing perfect
I may have stained you may have stained she may have stained we may have stained you may have stained they may have stained	I may have been staining you may have been staining she may have been staining we may have been staining you may have been staining they may have been staining

Negation

Simple form	V-ing form
I may not stain you may not stain she may not stain we may not stain you may not stain they may not stain	I may not be staining you may not be staining she may not be staining we may not be staining you may not be staining they may not be staining
Perfect	V-ing perfect
I may not have stained you may not have stained she may not have stained we may not have stained you may not have stained they may not have stained	I may not have been staining you may not have been staining she may not have been staining we may not have been staining you may not have been staining they may not have been staining

Interrogative form

Simple form	V-ing form
may I stain? may you stain? may she stain? may we stain? may you stain? may they stain?	may I be staining? may you be staining? may she be staining? may we be staining? may you be staining? may they be staining?
Perfect	V-ing perfect
may I have stained? may you have stained? may she have stained? may we have stained? may you have stained? may they have stained?	may I have been staining? may you have been staining? may she have been staining? may we have been staining? may you have been staining? may they have been staining?

Interro-negative form

Simple form	V-ing form
may I not stain? may you not stain? may she not stain? may we not stain? may you not stain? may they not stain?	may I not be staining? may you not be staining? may she not be staining? may we not be staining? may you not be staining? may they not be staining?
Perfect	V-ing perfect
may I not have stained? may you not have stained? may she not have stained? may we not have stained? may you not have stained? may they not have stained?	may I not have been staining? may you not have been staining? may she not have been staining? may we not have been staining? may you not have been staining? may they not have been staining?