I may tunnel you may tunnel he may tunnel we may tunnel you may tunnel they may tunnel
V-ing form
I may be tunnelling you may be tunnelling he may be tunnelling we may be tunnelling you may be tunnelling they may be tunnelling
Perfect
I may have tunnelled you may have tunnelled he may have tunnelled we may have tunnelled you may have tunnelled they may have tunnelled
V-ing perfect
I may have been tunnelling you may have been tunnelling he may have been tunnelling we may have been tunnelling you may have been tunnelling they may have been tunnelling
Negation
Simple form
I may not tunnel you may not tunnel he may not tunnel we may not tunnel you may not tunnel they may not tunnel
V-ing form
I may not be tunnelling you may not be tunnelling he may not be tunnelling we may not be tunnelling you may not be tunnelling they may not be tunnelling
Perfect
I may not have tunnelled you may not have tunnelled he may not have tunnelled we may not have tunnelled you may not have tunnelled they may not have tunnelled
V-ing perfect
I may not have been tunnelling you may not have been tunnelling he may not have been tunnelling we may not have been tunnelling you may not have been tunnelling they may not have been tunnelling
Interrogative form
Simple form
may I tunnel? may you tunnel? may he tunnel? may we tunnel? may you tunnel? may they tunnel?
V-ing form
may I be tunnelling? may you be tunnelling? may he be tunnelling? may we be tunnelling? may you be tunnelling? may they be tunnelling?
Perfect
may I have tunnelled? may you have tunnelled? may he have tunnelled? may we have tunnelled? may you have tunnelled? may they have tunnelled?
V-ing perfect
may I have been tunnelling? may you have been tunnelling? may he have been tunnelling? may we have been tunnelling? may you have been tunnelling? may they have been tunnelling?
Interro-negative form
Simple form
may I not tunnel? may you not tunnel? may he not tunnel? may we not tunnel? may you not tunnel? may they not tunnel?
V-ing form
may I not be tunnelling? may you not be tunnelling? may he not be tunnelling? may we not be tunnelling? may you not be tunnelling? may they not be tunnelling?
Perfect
may I not have tunnelled? may you not have tunnelled? may he not have tunnelled? may we not have tunnelled? may you not have tunnelled? may they not have tunnelled?
V-ing perfect
may I not have been tunnelling? may you not have been tunnelling? may he not have been tunnelling? may we not have been tunnelling? may you not have been tunnelling? may they not have been tunnelling?