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!