English verb conjugation
MAY TREPAN

Regular verb: trepan - trepanned - trepanned

Affirmation

Simple form	V-ing form
I may trepan you may trepan he may trepan we may trepan you may trepan they may trepan	I may be trepanning you may be trepanning he may be trepanning we may be trepanning you may be trepanning they may be trepanning
Perfect	V-ing perfect
I may have trepanned you may have trepanned he may have trepanned we may have trepanned you may have trepanned they may have trepanned	I may have been trepanning you may have been trepanning he may have been trepanning we may have been trepanning you may have been trepanning they may have been trepanning

Negation

Simple form	V-ing form
I may not trepan you may not trepan he may not trepan we may not trepan you may not trepan they may not trepan	I may not be trepanning you may not be trepanning he may not be trepanning we may not be trepanning you may not be trepanning they may not be trepanning
Perfect	V-ing perfect
I may not have trepanned you may not have trepanned he may not have trepanned we may not have trepanned you may not have trepanned they may not have trepanned	I may not have been trepanning you may not have been trepanning he may not have been trepanning we may not have been trepanning you may not have been trepanning they may not have been trepanning

Interrogative form

Simple form	V-ing form
may I trepan? may you trepan? may he trepan? may we trepan? may you trepan? may they trepan?	may I be trepanning? may you be trepanning? may he be trepanning? may we be trepanning? may you be trepanning? may they be trepanning?
Perfect	V-ing perfect
may I have trepanned? may you have trepanned? may he have trepanned? may we have trepanned? may you have trepanned? may they have trepanned?	may I have been trepanning? may you have been trepanning? may he have been trepanning? may we have been trepanning? may you have been trepanning? may they have been trepanning?

Interro-negative form

Simple form	V-ing form
may I not trepan? may you not trepan? may he not trepan? may we not trepan? may you not trepan? may they not trepan?	may I not be trepanning? may you not be trepanning? may he not be trepanning? may we not be trepanning? may you not be trepanning? may they not be trepanning?
Perfect	V-ing perfect
may I not have trepanned? may you not have trepanned? may he not have trepanned? may we not have trepanned? may you not have trepanned? may they not have trepanned?	may I not have been trepanning? may you not have been trepanning? may he not have been trepanning? may we not have been trepanning? may you not have been trepanning? may they not have been trepanning?