257( b )

M ɮ {bM ɮ | { |

M ɮ xɮ˺M ɮ | +{ |

En ɮ Bz in ɮ

<n h En ɮ | 1 |

+{{ ɮ iɨ{{ ɮ

En{xɪx ESɴɮn ɮ | 2 |

+hh ɮ Bz Sz ɮ

{hɨέi ʽ{ʮ Sz ɮ | 3 |

ʴɹh ɮ =b{ Eh ɮ

Bzɟέi {֮nʴ] ɮ | 4 |