172* +xi ɨb =n * ɳE xn Pɮ **1** **w*** xɴɱ Eb Eb * x E ExS Eb **w** {l Vh i{i E * iʺ ɶn Vx Pɱ **2** ʴɷɴ{E Eɳ{i * iʺ Mh Eb Pi **3** iE h x]vɮ * M Mx ɨSɮ **4**


Oliұ MS +M Oliұ {fS +M +MS +vɪ