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Substitution Cipher
This cipher is one of the easiest ciphers to write and to break. Because it is easy to break, it is not used often.
20 8 15 19 5 / 23 8 15 / 3 1 14 14 15 20 / 3 8 1 14 7 5 / 20 8 5 9 18 / 13 9 14 4 19
/ 3 1 14 14 15 20 / 3 8 1 14 7 5 / 1 14 25 20 8 9 14 7.
You write 1 through 26 and write the alphabet next to the numbers – A=1, B=2, Y=25, Z=26
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C
D
E
F
G
H
I
J
K
L
M
14
15
16
17
18
19
20
21
22
23
24
25
26
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Then you write you message in numbers instead of letters.
This week’s proverb is:
Those who cannot change their minds cannot change anything. -George Bernard Shaw