When I saw the word CICADA recently, I realized it was comprised of two 3-letter palindromes. I thought I'd be able to come up with plenty of other words that share the ABACDC structure, but the only one I could find is ABASES! Please let me know if you can come up with any other words.
Note: words like SASSES, SESTET, and PAPAYA are comprised of two 3-letter palindromes, but don't fit the ABACDC criteria because they repeat/share letters between the palindromes (e.g. SASSES has an ABAACA letter pattern, and PAPAYA is ABABCB)