Passage: Apart from her group activities, Suzy also ventured into acting. She made her acting debut in the music teen drama Dream High, which aired on KBS from January 3 to February 28. Suzy also released an OST for the drama, titled "Winter Child". The drama was a local success, earning high viewership ratings during its two-month run; and also gained popularity in other countries. At the KBS Drama Awards, Suzy won the Best New Actress award as well as Best Couple award with co-star Kim Soo-hyun. Suzy also became a cast member in KBS TV reality show Invincible Youth 2. The show began filming its first episode on October 19 and aired on November 11.Suzy made her movie debut in the film Architecture 101 (2012) playing the younger version of the female protagonist. Architecture 101 was one of the ten most-watched films in Korea in the first quarter of 2012, and achieved over 4.1 million admissions nine weeks after its theater release; a new box-office record set for Korean melodramas. The same year, Suzy played a supporting role in KBS drama Big, written by the Hong sisters, alongside Gong Yoo and Lee Min-jung.She is also the first Korean female celebrity to win a singer rookie award, drama rookie award and film rookie award, having received the Best New Actress award at the 48th Baeksang Arts Awards for her acting performance in Architecture 101. On December 22, 2012, Suzy won the Best Newcomer award in the Variety category at the KBS Entertainment Awards for her stint in Invincible Youth 2

Question: What was the name of the reality show that Suzy was a cast member of before making her movie debut?
Invincible Youth 2