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I might know what it is. Assuming they are all of equal rhythm, it seems to be a finger exercise. I used to teach my piano students with a book called "Finger Power". This book included songs intended to teach basics of piano, as well as exercising both the fingers and the coordination between mind and fongers. one such song went CAGAFARA,DBABGBFB, ECBCACGC,etc.
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