- 6-1 -> 6-1-3
- 6-1-3 -> 6-1-all-organism
- 6-1-and-6-2-prop -> 6-1-forces-in-tw
- 6-1-forg-csol-s- -> 6-1-radian-and-d
- 6-1-radiation-po -> 6-1-traits-of-wr
- 6-1-traits-voice -> 6-11-18
- 6-11-2012-sari-l -> 6-18
- 6-18 -> 6-2
- 6-2 -> 6-2-converting-f
- 6-2-converting-f -> 6-2-properties-o
- 6-2-properties-o -> 6-2-volleyball-r