Which song was planned to be the 3rd A-side in "BLUE BIRD"?

[Zeke.]

I often wondered this and I think it has to be between 1 LOVE, momentum, and JEWEL. I really doubt that momentum could have been it as it is a "winter song". I originally thought it had to have been JEWEL, but Ayu usually releases ballads like that in the fall/winter times so it could have been 1 LOVE? But I think JEWEL fits in better with the BLUE BIRD single, and although the song is somewhat simple, it is amazingly perfect and screams of completion. You can tell a lot of time and effort went into making that song a masterpiece!