English verb conjugation
MAY TREPHINE

Regular verb: trephine - trephined - trephined

Affirmation

Simple form	V-ing form
I may trephine you may trephine he may trephine we may trephine you may trephine they may trephine	I may be trephining you may be trephining he may be trephining we may be trephining you may be trephining they may be trephining
Perfect	V-ing perfect
I may have trephined you may have trephined he may have trephined we may have trephined you may have trephined they may have trephined	I may have been trephining you may have been trephining he may have been trephining we may have been trephining you may have been trephining they may have been trephining

Negation

Simple form	V-ing form
I may not trephine you may not trephine he may not trephine we may not trephine you may not trephine they may not trephine	I may not be trephining you may not be trephining he may not be trephining we may not be trephining you may not be trephining they may not be trephining
Perfect	V-ing perfect
I may not have trephined you may not have trephined he may not have trephined we may not have trephined you may not have trephined they may not have trephined	I may not have been trephining you may not have been trephining he may not have been trephining we may not have been trephining you may not have been trephining they may not have been trephining

Interrogative form

Simple form	V-ing form
may I trephine? may you trephine? may he trephine? may we trephine? may you trephine? may they trephine?	may I be trephining? may you be trephining? may he be trephining? may we be trephining? may you be trephining? may they be trephining?
Perfect	V-ing perfect
may I have trephined? may you have trephined? may he have trephined? may we have trephined? may you have trephined? may they have trephined?	may I have been trephining? may you have been trephining? may he have been trephining? may we have been trephining? may you have been trephining? may they have been trephining?

Interro-negative form

Simple form	V-ing form
may I not trephine? may you not trephine? may he not trephine? may we not trephine? may you not trephine? may they not trephine?	may I not be trephining? may you not be trephining? may he not be trephining? may we not be trephining? may you not be trephining? may they not be trephining?
Perfect	V-ing perfect
may I not have trephined? may you not have trephined? may he not have trephined? may we not have trephined? may you not have trephined? may they not have trephined?	may I not have been trephining? may you not have been trephining? may he not have been trephining? may we not have been trephining? may you not have been trephining? may they not have been trephining?