But English lyric was referencing to the Korean one.. Not exactly the same word by word,, but the meaning is same.. So I think,, Sooyoung played more part in lyric more than Tiffany..
actually no.
Soyooung talked about it and said she wrote her korean lyrics after reading tiffany's english lyrics.
Tiffany composed the song and wrote englihs lyrics first and later korean lyrics were written.