HKB
omicron nu / kappa alpha tau alpha / mu alpha zeta omicron nu}, {delta epsilon xi iota tau epsilon rho omicron nu} is for {delta epsilon xi iota omicron nu}.
[Nouns in themselves are either masculine, feminine, or neuter. Masculine are such as end in {nu}, {rho}, {sigma}, or in some letter compounded with {sigma},--these being two, and {xi}. Feminine, such as end in vowels that are always long, namely {eta} and {omega}, and--of vowels that admit of lengthening--those in {alpha}. Thus the number of letters in which nouns masculine and feminine end is the same; for {psi} and {xi} are equivalent to endings in {sigma}. No noun ends in a mute or a vowel short by nature. Three only end in {iota},--{mu eta lambda iota}, {kappa omicron mu mu iota}, {pi epsilon pi epsilon rho iota}: five end in {upsilon}. Neuter nouns end in these two latter vowels; also in {nu} and {sigma}.]
XXII