FAM FAM Rule 1 (4,B) B 0 FAM Rule 2 (A2,B2) B 02 m FAM Rule m () →B FAM SystemFAM FAM System FAM Rule m FAM Rule 1 ( , ) A1 B1 ( , ) A2 B2 FAM Rule 2 ( , ) Am Bm B1  B2  Bm   B 1 2   m  A