interval alphabet v1
set of two notes represent a letter  
space-[1,1]
a-[1,2]
b-[2,2]
c-[2,3]
d-[2,4]
e-[1,3]
f-[2,5]
g-[2,6]
h-[2,7]
i-[1,4]
j-[3,3]
k-[3,4]
l-[3,5]
m-[3,6]
n-[3,7]
o-[1,5]
p-[4,4]
q-[4,5]
r-[4,6]
s-[4,7]
t-[5,5]
u-[1,6]
v-[5,6]
w-[5,7]
x-[6,6]
y-[1,7]
z-[6,7]
new line/new phrase-[7,7]