The term 'Letter from Athens' is composed of six Greek letters: PHI (3 letters), TAU (3 letters), CHI (3 letters), ETA (3 letters), OMEGA (5 letters), and THETA (5 letters). PHI is the 21st letter of the Greek alphabet, TAU is the 19th letter, CHI is the 22nd letter, ETA is the 8th letter, OMEGA is the 24th letter, and THETA is the 9th letter. Together, these letters form a phrase that is associated with the ancient city of Athens in Greece.