Findings:

• mechanical cipher system
• cipher
• cipher text
• substitution cipher
• monoalphabetic substitution cipher
• Caesar shift cipher
• simple substitution cipher
• homophonic substitution cipher
• polyalphabetic substitution cipher
• transposition cipher
• cipher alphabet
• asymmetric cipher
• symmetric cipher
• hybrid cryptosystem
• Pigpen Cipher
• Hash Cipher
• The Beale ciphers
• Caesar's Cipher
• atbash cipher
• Soviet Espionage Cipher
• Playfair Cipher
• M209 Cipher Machine
• Simon Singh's Code Book Cipher Challenge Cracked
• Stream Cipher
• synchronous stream cipher
• Additive Stream Ciphers
• self-synchronizing stream cipher
• Turning grill transposition cipher
• ERIKO-CHAN cipher
• cipher (user)
• Block cipher
• null cipher
• block cipher cryptanalysis
• Bacon Cipher
• Keyword substitution cipher
• Ideal cipher model
• running key cipher
• Hill cipher
• Permutation cipher
• random key substitution cipher
• Nihilist cipher
• ADFGVX cipher
• bifid cipher
• VIC cipher
• rail fence cipher
• Dorabella Cipher
• Computerized replacement dog brain
• The real problem with computerized translations
• windowing system
• Operating system
• X Window System
• file system
• Bulletin Board System
• System
• Elephant Memory Systems
• Systems Administrator
• Online Systems Services, Inc.
• limitations of the system
• Sound Systems
• Essential System Administration
• Emergency Brain-Dump System
• Global System for Mobile communications
• metric system
• Two-party system
• Honor system
• solar system
• HERO System
• systems music
• value system
• systems engineer
• Computational and Neural Systems
• Microsoft Certified Systems Engineer
• rating system
• System management
• immune system
• imperial system
• retinal imaging
• systems engineering
• Domain Operating System
• System 7
• public transit system
• system call
• Geographic Information System
• extended nervous system
• single system image
• system engineer
• General Systems Theory
• complement system
• Nintendo Entertainment System
• Super Nintendo Entertainment System
• nervous system
• circulatory system
• belief system
• Disk Operating System
• Biological system of classification
• central nervous system
• roleplaying game system
• Fountain pen filling system
• hypertext systems
• writing system
• Master System
• The buddy system
• Feudal System
• decimal system
• Computer naming system
• Dewey Decimal System
• MIU
• TNT system
• Hynek Classification System
• lymphatic system
• Advanced Photo System
• Reproductive System
• digestive system
• Catholic indoctrination resides in the limbic system
• limbic system
• magnetic guidance systems
• University System of Maryland
• Public Address system
• Sienar Fleet Systems
• Two party system
• Ptolemaic system
• Copernican system
• Endocrine system
• System 5
• System 6
• object oriented database systems
• expert system
• fringe operating systems
• Nielsen Ratings System
• The good thing about using a horribly outdated file system
• Emergency Broadcast System
• Eisenhower Interstate System
• Distributed system
• Integrated Court System
• Parallel Court System
• file system checker
• confederated systems
• System 16
• Linux-based operating system
• Symbolic Systems
• weapons systems
• root system

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