AKB48 Tracks in Stereo

I think we're all aware that Yuuhi wo Miteiru ka? and Romance, Irane! were released with "Himawari 2.0" and "Himawari 2.1" versions. Since its release, I've known Zenigata Heiji has a split audio track, and just recently I realized that Seishun no Inadzuma was also recorded separately.

Anyone want to help compile a list of split audio tracks?

UPDATED LIST:
- Yuuhi wo Miteiru ka? (Himawari 2.0)
- Yuuhi wo Miteiru ka? (Himawari 2.1)
- Romance, Irane! (Himawari 2.0)
- Romance, Irane! (Himawari 2.1)
- Zenigata Heiji
- Seishun no Inadzuma
- 50%
- Heart ga Kaze wo Hiita Yoru