4 - Dec Learning

https://www.youtube.com/watch?v=2A-le2mGfco

https://www.youtube.com/watch?v=SMjLBK2RsxQ&t=11m01s

https://www.youtube.com/watch?v=lswh-emlgLg

https://www.youtube.com/watch?v=w7o6tHK-2Ls

writing: ta shi shei?

https://www.youtube.com/watch?v=137wrAbR2qQ

https://www.youtube.com/watch?v=CYirHUYXsM4

https://www.youtube.com/watch?v=WvUwq6GutiQ

https://www.youtube.com/watch?v=S_zVuHlhs-0

https://www.youtube.com/watch?v=fXiwczsJSnc

https://www.youtube.com/watch?v=eOvtr_cVMZI

https://www.youtube.com/watch?v=RS1K_-6e6vU

https://www.youtube.com/watch?v=NTBztMwQDns

http://www.youtube.com/watch?v=pNvN3Cj0HJI&feature=relmfu

https://www.youtube.com/watch?v=JWww1nt07KQ