Individual #Greek_alphabet  the alphabet used by ancient Greeks
  instance of:  alphabet
  member:  alpha  the 1st letter of the Greek alphabet
  member:  beta  the 2nd letter of the Greek alphabet
  member:  gamma  the 3rd letter of the Greek alphabet
  member:  delta.letter_of_the_alphabet  the 4th letter of the Greek alphabet
  member:  epsilon  the 5th letter of the Greek alphabet
  member:  zeta  the 6th letter of the Greek alphabet
  member:  eta  the 7th letter of the Greek alphabet
  member:  theta  the 8th letter of the Greek alphabet
  member:  iota  the 9th letter of the Greek alphabet
  member:  kappa  the 10th letter of the Greek alphabet
  member:  lambda.letter_of_the_alphabet  the 11th letter of the Greek alphabet
  member:  mu  the 12th letter of the Greek alphabet
  member:  nu  the 13th letter of the Greek alphabet
  member:  xi  the 14th letter of the Greek alphabet
  member:  omicron  the 15th letter of the Greek alphabet
  member:  pi  the 16th letter of the Greek alphabet
  member:  rho  the 17th letter of the Greek alphabet
  member:  sigma  the 18th letter of the Greek alphabet
  member:  tau  the 19th letter of the Greek alphabet
  member:  upsilon  the 20th letter of the Greek alphabet
  member:  phi  the 21st letter of the Greek alphabet
  member:  chi  the 22nd letter of the Greek alphabet
  member:  psi  the 23rd letter of the Greek alphabet
  member:  omega  the last (24th) letter of the Greek alphabet

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