ゆびどら千本ノック 41〜50

https://www.youtube.com/watch?v=5KG5b_xdo8M

https://www.youtube.com/watch?v=2oZbk3wuWaE

https://www.youtube.com/watch?v=m1WB_05W4ec

https://www.youtube.com/watch?v=n0u_Vl9jsCk

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

https://www.youtube.com/watch?v=EfTn_7Tb4ds

https://www.youtube.com/watch?v=mq-ucKUIc9A