By April 1942 JN25 was about 20 % readable, so codebreakers could read through "about one in five words" and visitors Assessment was much more beneficial. [thirteen] Tiltman had devised a (sluggish; neither simple nor speedy) technique of breaking it and experienced mentioned that all the quantities in the codebook https://vy39383.blogspothub.com/14803732/examine-this-report-on-pm