ティナ << Tina
テイナ << Teina
notice the difference in "イ" (the other one being smaller while the other one is not)
I don't know Japanese well I'm sorry I can't explain, I'm just a weeb out here..
But I think examples are
チ-chi ヨ-yo チョ-cho チョコ-choco
ヴ-vu イ-i ヴィ-vi ヴィタ-vita