Help with greek songs

Hello I need help to find the Original Greek version to the songs here in the list
the tune\melody of this song taken from some greek song and I need the name of the greek original song for this songs
thank you

covers for exemple
Original
[QHxpmGlrs9k]http://www.youtube.com/watch?v=QHxpmGlrs9k[/video]Original
cover
[LRW-Up6OTz4]http://www.youtube.com/watch?v=LRW-Up6OTz4[/video]
Original
[BlIUu93EAsQ]http://www.youtube.com/watch?v=BlIUu93EAsQ[/video]
cover
[iziagp-fKP4]http://www.youtube.com/watch?v=iziagp-fKP4[/video]
LIST R.Q
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