English verb conjugation
MAY MASK

Regular verb: mask - masked - masked

Affirmation

Simple form	V-ing form
I may mask you may mask he may mask we may mask you may mask they may mask	I may be masking you may be masking he may be masking we may be masking you may be masking they may be masking
Perfect	V-ing perfect
I may have masked you may have masked he may have masked we may have masked you may have masked they may have masked	I may have been masking you may have been masking he may have been masking we may have been masking you may have been masking they may have been masking

Negation

Simple form	V-ing form
I may not mask you may not mask he may not mask we may not mask you may not mask they may not mask	I may not be masking you may not be masking he may not be masking we may not be masking you may not be masking they may not be masking
Perfect	V-ing perfect
I may not have masked you may not have masked he may not have masked we may not have masked you may not have masked they may not have masked	I may not have been masking you may not have been masking he may not have been masking we may not have been masking you may not have been masking they may not have been masking

Interrogative form

Simple form	V-ing form
may I mask? may you mask? may he mask? may we mask? may you mask? may they mask?	may I be masking? may you be masking? may he be masking? may we be masking? may you be masking? may they be masking?
Perfect	V-ing perfect
may I have masked? may you have masked? may he have masked? may we have masked? may you have masked? may they have masked?	may I have been masking? may you have been masking? may he have been masking? may we have been masking? may you have been masking? may they have been masking?

Interro-negative form

Simple form	V-ing form
may I not mask? may you not mask? may he not mask? may we not mask? may you not mask? may they not mask?	may I not be masking? may you not be masking? may he not be masking? may we not be masking? may you not be masking? may they not be masking?
Perfect	V-ing perfect
may I not have masked? may you not have masked? may he not have masked? may we not have masked? may you not have masked? may they not have masked?	may I not have been masking? may you not have been masking? may he not have been masking? may we not have been masking? may you not have been masking? may they not have been masking?