There is a children's educational TV program called "Pitagoraswitch" on NHK
channel in Japan, and one of its regular corner is called "Algorithm
Exercise" which is for multiple people, particularly even-numbered people.
Recently, in particular, they have been visiting various different type of
working people to perform this exercise with.
I've seen a video clip taken at Michinoku-beya with 4 younger rikishi of
Michinoku-beya, several times this month. The video was taken on the
practice dohyou at the heya which is owned by Michinoku Oyakata or former
Ozeki Kirishima in Ryogoku.