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!