The expressions "Al-Ka" and "Ba-Ta" are the two first letters of the Gorean alphabet.
-Priest Kings of Gor, pg. 94
"For example, we have learned not only the order of frequency of occurrence of letters but, as would be expected, rough percentages of occurrence as well. Eta, for example, occurs two hundred times more frequently in the language than Altron. Over forty percent of the language consists of the first five letters I mentioned, Eta, Tau, Al-Ka, Omnion and Nu."
"That seems impossible," said
"It is true," said Bosk. "Further, over sixty percent of the language consists of those five letters plus Ar, Ina, Shu and Homan."
-Slave Girl of Gor, pg. 384
The Gorean alphabet has twenty-eight characters, all of which, I suspect, owe their origin to one or another of the alphabets of Earth. Several show a clear-cut resemblance to Greek letters, for example. 'Sidge', on the other hand, could be cuneiform, and 'Tun' and 'Val' are probably calligraphically drifted from demotic. At least six letters suggest influence by the classical Roman alphabet, and seven do, if we count 'Kef', the first letter in 'Kajira'. 'Shu' is represented by a sign which seems clearly oriental in origin and 'Homan', I speculate, may derive from Cretan.
-Explorers of Gor, pg. 9