Possible Clues:

• European problem in speech reflected on Greek character
• E in the Greek alphabet
• Fifth letter to the Corinthians?
• Way of speaking recalled in time in letter
• Greek character fiddled with pen describing storage site
• Letter before zeta
• Letter from Musk having acquired revolutionary internet business
• Greek character working after piles damaged
• Greek character left surrounded by wild ponies
• One Greek character or another abandoning university after end of course