Septenary Cipher
The Septenary cipher maps the alphabet onto a rising-and-falling cycle of 1 through 7, peaking at G and T. It is built around the mystical significance of the number seven.
Letter values
a
1
b
2
c
3
d
4
e
5
f
6
g
7
h
6
i
5
j
4
k
3
l
2
m
1
n
1
o
2
p
3
q
4
r
5
s
6
t
7
u
6
v
5
w
4
x
3
y
2
z
1