3 words for EEE 1–3 letters

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1 letter (1)

e
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2 letters (1)

ee
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3 letters (1)

eee
Archaic object pronoun
?
T
?
H
?
E
?
E
Hint 1 meaning
The objective case of thou. See Thou.
Hint 2 anagram
TEHE
Hint 3 another clue
BEING USED OR WORKED FOR THE FIRST TIME
17 +1