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 mayn't trepan you mayn't trepan he mayn't trepan we mayn't trepan you mayn't trepan they mayn't trepan	I mayn't be trepanning you mayn't be trepanning he mayn't be trepanning we mayn't be trepanning you mayn't be trepanning they mayn't be trepanning
Perfect	V-ing perfect
I mayn't have trepanned you mayn't have trepanned he mayn't have trepanned we mayn't have trepanned you mayn't have trepanned they mayn't have trepanned	I mayn't have been trepanning you mayn't have been trepanning he mayn't have been trepanning we mayn't have been trepanning you mayn't have been trepanning they mayn't 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
mayn't I trepan? mayn't you trepan? mayn't he trepan? mayn't we trepan? mayn't you trepan? mayn't they trepan?	mayn't I be trepanning? mayn't you be trepanning? mayn't he be trepanning? mayn't we be trepanning? mayn't you be trepanning? mayn't they be trepanning?
Perfect	V-ing perfect
mayn't I have trepanned? mayn't you have trepanned? mayn't he have trepanned? mayn't we have trepanned? mayn't you have trepanned? mayn't they have trepanned?	mayn't I have been trepanning? mayn't you have been trepanning? mayn't he have been trepanning? mayn't we have been trepanning? mayn't you have been trepanning? mayn't they have been trepanning?