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S1 by HaYeon
S2 by YuBin
S3 by SooMin
S4 by Mayu
S5 by SeoAh
S6 by JiWoo
S7 by Lynn
S8 by HyeRin
S9 by DaHyun
S10 by Kaede
S11 by JooBin
S12 by JiYeon
S13 by ChaeWon
S14 by Xinyu
S15 by SoHyun
S16 by ChaeYeon
S17 by NaKyoung
S18 by Kotone
S19 by SeoYeon
S20 by Sullin
S21 by Nien
S22 by ShiOn
S23 by YooYeon
S24 by YeonJi
They revealed it on twitter.