2012.6.27
https://www.youtube.com/watch?v=d7huak42Kqw
https://www.youtube.com/watch?v=Dxx0j1v8HTU
https://www.youtube.com/watch?v=1VbrO5vPDBY
https://www.youtube.com/watch?v=JUK3WjqrOak
https://www.youtube.com/watch?v=3i7n2leDnMM
https://www.youtube.com/watch?v=8dV-Iomjc68
https://www.youtube.com/watch?v=fMg8TjCbTjg
https://www.youtube.com/watch?v=38d7y_zFTFE
https://www.youtube.com/watch?v=4YZ97sJHdQs
https://www.youtube.com/watch?v=UsVFEDYoGtY
https://www.youtube.com/watch?v=ECfnrN3rHN8
https://www.youtube.com/watch?v=nzQa8zIGLbY
https://www.youtube.com/watch?v=RiAei3_rBkE