トロッコ

http://www.youtube.com/watch?v=UE7GD45NlSY

SED

http://www.hyuki.com/yukiwiki/wiki.cgi?%A5%D7%A5%ED%A5%B0%A5%E9%A5%DF%A5%F3%A5%B0%B8%C0%B8%EC%A4%AC%BC%D6%A4%C0%A4%C3%A4%BF%A4%E9#i30