English verb conjugation
MAY FOIL

Regular verb: foil - foiled - foiled

Affirmation

Simple form	V-ing form
I may foil you may foil he may foil we may foil you may foil they may foil	I may be foiling you may be foiling he may be foiling we may be foiling you may be foiling they may be foiling
Perfect	V-ing perfect
I may have foiled you may have foiled he may have foiled we may have foiled you may have foiled they may have foiled	I may have been foiling you may have been foiling he may have been foiling we may have been foiling you may have been foiling they may have been foiling

Negation

Simple form	V-ing form
I may not foil you may not foil he may not foil we may not foil you may not foil they may not foil	I may not be foiling you may not be foiling he may not be foiling we may not be foiling you may not be foiling they may not be foiling
Perfect	V-ing perfect
I may not have foiled you may not have foiled he may not have foiled we may not have foiled you may not have foiled they may not have foiled	I may not have been foiling you may not have been foiling he may not have been foiling we may not have been foiling you may not have been foiling they may not have been foiling

Interrogative form

Simple form	V-ing form
may I foil? may you foil? may he foil? may we foil? may you foil? may they foil?	may I be foiling? may you be foiling? may he be foiling? may we be foiling? may you be foiling? may they be foiling?
Perfect	V-ing perfect
may I have foiled? may you have foiled? may he have foiled? may we have foiled? may you have foiled? may they have foiled?	may I have been foiling? may you have been foiling? may he have been foiling? may we have been foiling? may you have been foiling? may they have been foiling?

Interro-negative form

Simple form	V-ing form
may I not foil? may you not foil? may he not foil? may we not foil? may you not foil? may they not foil?	may I not be foiling? may you not be foiling? may he not be foiling? may we not be foiling? may you not be foiling? may they not be foiling?
Perfect	V-ing perfect
may I not have foiled? may you not have foiled? may he not have foiled? may we not have foiled? may you not have foiled? may they not have foiled?	may I not have been foiling? may you not have been foiling? may he not have been foiling? may we not have been foiling? may you not have been foiling? may they not have been foiling?