Hidden on: 06/10/2018
Title: ramona and her father
Author: beverly cleary
Tracking Number: A98
Location: Highcrest Middle School, Wilmette, Illinois United States
BirthYear: 2007
Clue:
ababb, aaaaa, abaaa, ababa, aaaaa, abbba, aaaaa, aaaba, abaab, aaaaa, aabba, aabaa, aaaaa, abbaa, aaabb, aabab, abaaa, abbaa, aaabb, babba, abbab, baabb, baaaa, abbba, baaaa, abaaa, babbb, aabaa

That clue is HARD hard hard…
Can you at least give a little hint? Thanks!
– – BunnyBean
Is it one of the codes / ciphers from one of the Book Scavenger series?