Bis2 -A=1,B=2,C=0,D=1-

Bis2 -Count the portion surrounded-
A=1,B=2,C=0,D=1
Do you this is to understand?
This app is a game that you instill this mechanism in the brain.

For example.
 "absorption" = 5
 a=1, b=1, s=0, o=1, r=0, p=1, t=0, i=0, o=1, n=0

Simple game!