41753169079241_page_157

41753169079241 | page 157 | https://thedailydialectics.com/pdfs/FIOA/41753169079241/41753169079241.pdf

by the rough frequency distribution of pairs of letters (digraphs), triples of letters (trigraphs), etc. 4. In Hand Systems where the enciphering process does not involve key (as examples, monome-dinome substitution, codes, etc. ), diagnosis is often not too difficult. Hand analyais, standard IBM…