A.1.6 B.2.0 C.2.4 D.2.8
A.0.1~0.2 B.0.2~0.4 C.0.4~0.6 D.0.6~0.8
A.0.1~0.3 B.0.3~0.5 C.0.5~0.7 D.0.7~1.0