perispomenon wrote:although I am not sure Î±Ï‚ in Î¸á½³Î¼Î¹ÏƒÏ„Î±Ï‚ is long or short (I chose long).
The recessive accent shows that the -Î±Ï‚ is in fact short, otherwise the accent could not go farther back than the iota. Do your remember nominative sing. Î¸á½±Î»Î±ÏƒÏƒÎ± (short alpha in the ending) but accusative plur. Î¸Î±Î»á½±ÏƒÏƒÎ±Ï‚ with the accent on the penult because the alpha became long (< *Î¸Î±Î»Î±ÏƒÏƒÎ±-Î½Ï‚).
Here we have the plural accusative from Î±á¼± Î¸á½³Î¼Î¹ÏƒÏ„ÎµÏ‚ (3rd decl.), thus Î¸á½³Î¼Î¹ÏƒÏ„Î±Ï‚ < *Î¸ÎµÎ¼Î¹ÏƒÏ„-Î½Ï‚ has a short alpha.
With Î²Î±ÏƒÎ¹Î»Îµá½»á¿ƒ, the verse would be unmetrical because the alpha is short. Î²Î¿Ï…Î»Îµá½»á¿ƒÏƒÎ¹ fits better in, helping to make up a spondaic hexameter :
_ _ | _uu | _ u ' u | _uu | _ _ | _ _
In "I 99", "I" stands for "Iota upper case", i.e. "Iliad, Book number 9", since the 24 books of Iliad were designated by means of upper case Greek letters (Odyssey's books have lower case letters), so I 99 means Iliad, I-9, 99, that reads :
ÏƒÎºá¿†Ï€Ï„Ïá½¹Î½ Ï„á¾½ á¼ Î´á½² Î¸á½³Î¼Î¹ÏƒÏ„Î±Ï‚, á¼µÎ½á½± ÏƒÏ†Î¹ÏƒÎ¹ Î²Î¿Ï…Î»Îµá½»á¿ƒÏƒÎ¸Î±.
But the manuscripts of the Iliad bear Î²Î±ÏƒÎ¹Î»Îµá½»á¿ƒ, later corrected into Î²Î¿Ï…Î»Îµá½»á¿ƒÏƒÎ¹.
Hope this helps.