through this Top 12, Grape (V2), New (V4), Natty (V5), & Pum (V7) all are 15-year-old girls, while Boss (V10) & Por (V12) are 16-year-old boys, Paprae (V9) & Mark (V11) are both 17. Concert summaries Week 1 - Top 100 Semi Final Audition Original Airdate: July 3, 2010 1Mark (V11) retired from the competition at the end of the concert week 3. 2Ton (V13) replaced Mark (V11) and showed his first performance on the concert week 4. Week 2 - Rock Original Airdate: July 10, 2010 Did not perform: Mark (V11) At the beginning of the concert week 2, they announced that there was no any elimination for the night. All of Top 12 contestants would be safe, even Mark (V11) who did not make a performance but still on the running onward. However, the votes for week 2 would be kept for the upcoming week, and they didn't declare bottom three results for the week. Week 3 - Hot Debut (During years contestants were born, 1988-1995) Original Airdate: July 17, 2010 Withdrew: Mark (V11) Bottom three: New (V4), Green (V8), & Paprae (V9) Immuned & Safe from elimination: Green (V8) After Top 12 finalists had performed in a theme of Hot Debut (Songs during years they were born), the audiences were shocked due to the withdrawal of Mark (V11) at the end of his show. Then, they declared bottom three of the week, and the judges decided to provide the immunity idol to Green (V8). Finally, the popular votes result was announced and the least vote contestant was also Green (V8), so he was safe from this first elimination. However, it was announced later that the day after the concert week 3, the substitution contestant (probably be one of Top 25 finalists) would be sent into the AF house, replaced Mark (V11) who withdrew from the competition. Week 4 - Korean Songs Original Airdate: July 24, 2010 Bottom three: Grape (V2), Natty (V5), & Boss (V10) Immuned & Safe from elimination: Natty (V5) It was the second time for this season that the judges could make a right decision on giving the immunity idol to the least vote contestant of the week, Natty (V5) by accidentally. As a result, Top 12 (included Ton (V13) who was a new joiner in the AF house as Top 12) still remain in the competition. Week 5 - Single Show (Contestant's Choice)