Added 20 sets to [DGC] Collection

Previews & DDL:

	[DGC] 2005.12 No.201 Mami Matsuyama 松山まみ
	[DGC] 2005.12 No.202 Mika Kaneda 金田美香
	[DGC] 2005.12 No.203 Junko Kaieda 海江田純子
	[DGC] 2005.12 No.204 Minami Aikawa 相川みなみ
	[DGC] 2005.12 No.205 Yuma Asami 麻美ゆま
	[DGC] 2005.12 No.206 Yurina Ito 伊藤ゆりな
	[DGC] 2005.12 No.207 Saori Matsunaka 松中沙織
	[DGC] 2005.12 No.208 Shizuka Mizumoto 水本しずか
	[DGC] 2005.12 No.209 Shion 紫音
	[DGC] 2005.12 No.210 Seiko Ando 安藤成子
	[DGC] 2005.12 No.211 Shizuka Kondo 近藤しづか
	[DGC] 2005.12 No.212 Riko Shirakawa 白河理子
	[DGC] 2005.12 No.213 Koharu Sakuraba 桜庭小春
	[DGC] 2006.01 No.214 Saaya Irie 紗綾
	[DGC] 2006.01 No.215 Yuika Hotta 堀田ゆい夏
	[DGC] 2006.01 No.216 Sayaka Sato 佐藤さやか
	[DGC] 2006.01 No.217 Nao Ogino 荻野なお
	[DGC] 2006.01 No.218 Kaori Furuya 古谷香織
	[DGC] 2006.01 No.219 Chiharu Wakatsuki 若槻千春
	[DGC] 2006.01 No.220 Honoka 穂花