TheCodeBreakers
LA did little more than put kata
kana into roman letters for telegraphic transmission and to secure some
abbreviation for cable economy. Thus the kana for ki was replaced by the
code form CI, the kana for to by IF, the two-kana combination of ka + n by
CE. Its two-letter codewords, all of either vowel-consonant or consonant-
vowel form and including such as ZO for 4, were supplemented by a list
of four-letter codewords, such as TUVE for dollars, SISA for ryoji ("consul"),
and XYGY for Yokohama. A very typical LA message is serial 01250 from
the Foreign Minister to Kita, dated December 4, which begins in
translation: "The following has been authorized as the year-end bonus for
employee typists of your office." This sort of code is generally called a
"passport code" because it usually serves for messages covering the
administrative routine of a mission, such as issuance of passports and
visas. LA was a particularly simple one to solve, partly because it had
annaabi.ee 
