Alpha[r]: The first letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Beta[r]: The second letter of the Greek alphabet, written as Β (upper-case) and β (lower-case). [e]
Gamma[r]: The third letter of the Greek alphabet, written (upper-case) or (lower-case). [e]
Delta[r]: The 4th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Epsilon[r]: The 5th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Zeta[r]: The 6th letter of the Greek alphabet. It is written as (upper-case) and (lower-case). [e]
Eta[r]: The 7th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Theta[r]: The 8th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Iota[r]: The 9th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Kappa[r]: The 10th letter of the Greek alphabet, written (upper case) and (lower case). [e]
Lambda[r]: The 11th letter of the Greek alphabet, written as (upper case) and (lower case). [e]
Mu[r]: The 12th letter of the Greek alphabet, written as (upper case) and (lower case). [e]
Nu[r]: The 13th letter of the Greek alphabet, written as (upper case) and (lower case). [e]
Xi[r]: The 14th letter of the Greek alphabet, written as (upper case) and (lower case). [e]
Omicron[r]: The 15th letter of the Greek alphabet, written as Ο (upper case) and ο (lower case). [e]
Pi[r]: The sixteenth letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Rho[r]: The 17th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Sigma[r]: The 18th letter of the Greek alphabet, written as (upper-case) and (lower-case), except at the end of a word, where the lower-case form is ς instead. [e]
Tau[r]: The 19th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Upsilon[r]: The 20th letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Phi[r]: The 21st letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Chi[r]: The 22nd letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Psi[r]: The 23rd letter of the Greek alphabet, written as (upper-case) and (lower-case). [e]
Omega[r]: The 24th and last letter of the Greek alphabet. [e]