oẶộốxBpJJgôỊẳẲKBỳôó{ẶpẲốCsxốKĨẲÃDốBuCốKĨpDẶốCrLốDỌGxốBGDốDẶừKốKsẲốéẲẢKố]pCốKÕốKĨỌGxốKGẲốDpƠo/ẶộóoỊốxBpJJgôỊ;ỳpyôóẳĨẲÃDốBuCốKĨpDẶốCrLốDỌGxốỈLẾxốKÀố“ặùxốCrLốỘúDốẶEp”ốẰỀCốơờớốwỎxốKĨpDẶốxÓpốxqxốẶẸpốJỠốýÀDốKÕốờồốỈLẾxốẰẲpjốỘNDẰốBuDẶốKẶỂjốýỌIxốKĨỌDẰốwrƠốÍốổốýẤpốýẲÃCốKsẲố;rố]ỆẲko/ỊóoỊốxBpJJgôỊXpỊKẲĐDôóoẲCẰốxBpJJgôxCJ-ỊẶĐKĐốyKẶLCwốẲXỳDKỳĨôốJKƠBỳgôỔẲyKẶỉốợơợỊỖĩốẶỳẲẰẶKỉốớờộỊỖĩôốJĨxgô//ẲkwpĐKẶpDẶẶĐpkỘD/DỳỔJ/ổơộộ/ộợợyồồỡổớồỗKởơộợBộkỔỳwỊôốpBKgô{ẶpẲốCsxốKĨẲÃDốBuCốKĨpDẶốCrLốDỌGxốBGDốDẶừKốKsẲốéẲẢKố]pCốKÕốKĨỌGxốKGẲốDpƠôố/óốXÊDẰốxẶMDẰốKẶỌÍDẰốBuCốxqxốKqxốỊẶữCốKsẲốKĨẲÃDốBuCkốmTDẶỉốÝẲDẶốẳẶLửD/ẳẳẻé]no/ỊóoỊốxBpJJgôỊWĐyƠôóXẶẲẠLốộờ/ỗjốẳĨẲÃDốBuCốKĨpDẶốCrLốDỌGxốỈLẾxốKÀố“ặùxốCrLốỘúDốẶEp”ốyĐốéẲỳKDpC,DPxỈLpĨỳBBĐốmxẶẲốDẶqDẶốxÓpốKỂốxẶỎxốCrLốDỌGxốBGDốDẶừKốKẶÀốẰẲGẲốxEốKĨOốJÍốKsẲố,KpBƠnjốẳĨLDẰốKứCố;ĐsKốýỆDẰốéúDốẶEpố{ẶĐpốẶẸxốéúDố[ẲÀL-ắLẾxốẳỐố:ẲqCốxNDẰốxqxốýFDốỘẤốKỂốxẶỎxjốýuốẪẶpẲốCsxốKsẲốYẲốKẴxẶốéúDố[ẲÀL-ắLẾxốẳỐố:ẲqCjố;rố]ỆẲko/ỊóoỊốxBpJJgôỊWĐyƠôóẳĨẲÃDốBuCốẰỀCốơờớốwỎxốKĨpDẶốxÓpốxqxốẶẸpốJỠốýÀDốKÕốờồốỈLẾxốẰẲpjốỘNDẰốBuDẶốKẶỂjốýỌIxốKĨỌDẰốwrƠốÍốổốýẤpốýẲÃCjốKĨĐDẰốýEốẶFDốổồồốwỎxốKĨpDẶốKĨỌDẰốwrƠốKsẲốYẲốKẴxẶốéúDố[ẲÀL-ắLẾxốẳỐố:ẲqCốKÕốDẰrƠốộờ-ổờ/ỗĩốJẾốxÉDốBsẲốKĨỌDẰốwrƠốKsẲố]ẶpLốặKLyẲĐjốJẾốỗờơốÝỆẲốXừDjốWpốÝÂDẶjố;rố]ỆẲốKÕốộờ-ổơ/ỗkốÝứƠốýỌIxốỖỳCốBrốKĨẲÃDốBuCốKĨpDẶốCrLốDỌGxốBGDốDẶừKốKsẲốéẲẢKố]pCốKÕốKĨỌGxốKGẲốDpƠo/ỊóoỊốxBpJJgôỊWĐyƠôóẳĨẲÃDốBuCốýuốýỳCốýÀDốxẶĐốDẰỌHẲốƠÁLốDẰẶẢốKẶLửKốDẶỒDẰốwỆốJỌLốKửỊốKĨpDẶốCrLốDỌGxốýủxốJùxốxÓpốxqxốỈLẾxốẰẲpkố]ỵKốỘúDốẶEpốýủxốKĨỌDẰốýỌIxốKẶÃốẶẲẢDốĨẼốKẶÊDẰốỈLpốxqxốxẶÓốýẠốKẶứDốKẶLỆxốỘẠốKẶẲÁDốDẶẲÁDjốýừKốDỌGxjốxĐDốDẰỌHẲkkkốỘrốỈLpốDỵKốỘAốCẠCốCsẲốDẶỌDẰốyỎKốẪẶĐqKjốKẲDẶốKÀốỘrốLƠÃDốxẶLƠÃDốxÓpốxqxốẶẸpốJỠốỘGẲốxẶừKốBẲẢLốCrLốDỌGxko/ỊóoỊốxBpJJgôỊWĐyƠôóẳĨẲÃDốBuCốKsĐốxFốẶỆẲốýÃốxqxốẶẸpốJỠốKĨĐDẰốDỌGxốẰẲpĐốBỌLjốKĨpĐốýỂẲốẪỠốKẶLửKốỘGẲốxqxốẶẸpốJỠốKĨĐDẰốẪẶLốỘÔxốxÒDẰốDẶỌốKĨÁDốKẶÀốẰẲGẲjốẰủỊốẰÌốxqxốDẰẶẢốJỠjốDẶrốJỌLốKửỊjốJẲDẶốỘẲÁDốỘrốxqxốxqốDẶứDjốKỂốxẶỎxốỈLpDốKứCốýÀDốDẰẶẢốKẶLửKốCrLốDỌGxko/ỊóoỊốxBpJJgôỊWĐyƠôóẳsẲốJÔốẪẲẢDốBựDốDrƠjốéẲỳKDpC,DPxỈLpĨỳBBĐốýEDốẶFDốờồốẶẸpốJỠốýÀDốKÕốổổốỈLẾxốẰẲpốDẶỌỉốWpố}pDjố]ẶửKốWtDjố;rDốắLẾxjốPLJKĨpBẲpjốPDẶjốXpDpypjốăẶqỊjốWĨpzẲBjố:LpKpCpBpkkkốýÀDốéẲẢKố]pCjốKẶpCốẰẲpốxqxốẶĐsKốýỆDẰốỘAốYỳCĐjốỘAốDẰĐrẲốKĨHẲốỘrốKĨpĐốýỂẲốỘúDốẶEpốDẰẶẢốKẶLửKkkko/ỊóoỊốxBpJJgôỊWĐyƠôóẳsẲốBĂốẪẶpẲốCsxjốKẲÀDốJỠố}ÁốẻLứDố{ẲÁLjố:ẲqCốýẾxốẳĨLDẰốKứCố;ĐsKốýỆDẰốéúDốẶEpố{ẶĐpốẶẸxốéúDố[ẲÀL-ắLẾxốẳỐố:ẲqCjốxẶĐốwẲÀKốýứƠốBrốẶĐsKốýỆDẰốỘúDốẶEpốDẰẶẢốKẶLửKốxEốỚốDẰẶẬpốýẾẲốỘGẲốYẲốKẴxẶốéúDố[ẲÀL-ắLẾxốẳỐố:ẲqCjốẰEỊốỊẶựDốKÕDẰốwỌGxốýỌpốéúDố[ẲÀL-ắLẾxốẳỐố:ẲqCốKĨÍốKẶrDẶốẪẶÊDẰốẰẲpDốJqDẰốKsĐốxÓpố;rố]ỆẲko/ỊóoỊốxBpJJgôỊWĐyƠôóẳĨẲÃDốBuCốxÒDẰốBrốxFốẶỆẲốýÃốxqxốẶẸpốJỠốKĨĐDẰốDỌGxốẰẲpĐốBỌLốỘGẲốxqxốẶẸpốJỠốỈLẾxốKÀjốẰEỊốỊẶựDốKúDẰốKẶÁCốJẲDẶốẪẶẴốxẶĐốẶĐsKốýỆDẰốCỠốKẶLửKốéẲẢKố]pCko/ỊóoỊốxBpJJgôỊWĐyƠôóÝsẲốJỎốÝủxốCẢDẶốẳĐrDốỈLƠẠDốXỆDẰốẶÉpốWpố}pDốKsẲốéẲẢKố]pCố-ố:ẲqĐốJỌốPBỳẪJpDyỳĨốặLĨyỳẨốxẶĐốwẲÀKỉố“XẶMDẰốKÊẲốýqDẶốẰẲqốxpĐốỘrốxĐẲốKĨẸDẰốỘpẲốKĨÉốxÓpốDẰẶẢốKẶLửKốỘÂốDEốDẶỌốCỆKốDẰÊDốDẰỒốỊẶỂốỈLqKjốỘỌIKốỈLpốCẸẲốĨpDẶốẰẲGẲjốýĐrDốẪÀKốCẸẲốDẰỌHẲkốXẶMDẰốKÊẲốxÒDẰốDẶửDốĨpốKqxốýỆDẰốJứLốJùxốxÓpốDẰẶẢốKẶLửKốKĨĐDẰốỘẲẢxốKẶMxốýữƠốJÔốẶẲÃLốwẲÀKốxÒDẰốDẶỌốýẾẲốKẶĐsẲốẰẲỒpốxqxốDẠDốỘúDốẶEpkốXẶÓốýẠốxÓpốKĨẲÃDốBuCốxEốỚốDẰẶẬpốJứLốJùxốẪẶẲốDEốKẶÃốẶẲẢDốwtDốxẶừKốxÓpốJÔốýpốysDẰốỘrốKẶẾDẰốDẶừKốỘẠốỘúDốẶEpkốẳẶÊDẰốỈLpốxẶừKốBẲẢLốCrLốDỌGxốJẾDẰốýỆDẰjốxqxốẶẸpốJỠốẪẶùỊốDFẲốKĨÁDốKẶÀốẰẲGẲốýuốxNDẰốDẶpLốẰẲGẲốKẶẲẢLốJÔốỊẶĐDẰốỊẶMốxÓpốxqxốDẠDốỘúDốẶEpốKĨLƠẠDốKẶẾDẰốxÒDẰốDẶỌốxqxốỈLpDốýẲÃCốẪẶqxốDẶpLkố[ỄẲốCỆKốKqxốỊẶữCốDẰẶẢốKẶLửKốBsẲốẪÃốxứLốxẶLƠẢDốýỆxốýqĐjốỊẶtDốqDẶốýỌIxốỘỹốýỷỊốxÓpốKẶÀốẰẲGẲốẪÀKốDẾẲốỘGẲốxẶMDẰốKpkôo/ỊóoỊốxBpJJgôỊWĐyƠôóẳĨĐDẰốẪẶLÊDốẪẶỂốKĨẲÃDốBuCjốộởốẶẸpốJỠốỈLẾxốKÀốJAốKĨÂDẶốyẲĂDốỘAốKsẲốYẲốKẴxẶốéúDố[ẲÀL-ắLẾxốẳỐố:ẲqCkốÝứƠốBrốẶĐsKốýỆDẰốýủxốKĨỌDẰốxÓpốxqxốKĨẲÃDốBuCốCrLốDỌGxốỈLẾxốKÀko/ỊóoỊốxBpJJgôỊWĐyƠôóẳẶÊDẰốỈLpốỊẶựDốKĨÂDẶốyẲĂDjốxÊDẰốxẶMDẰốƠÁLốDẰẶẢốKẶLửKốxEốKẶÃốKĨÔxốKẲÀỊốKẶỳĐốyẼẲốỈLqốKĨÂDẶốẶÂDẶốKẶrDẶốCỆKốwỎxốKĨpDẶốCrLốDỌGxốỘAốDẶpDẶốxÒDẰốDẶỌốKẶừƠốýỌIxốỊẶựDốDrĐốJÔốtDẶốẶỌÍDẰốxÓpốxqxốDẠDốỘúDốẶEpốýẾẲốỘGẲốỘẲẢxốxẶẸDốxẶÓốýẠốỘrốỊẶĐDẰốxqxẶốỘAốxÓpốxqxốẶẸpốJỠko/ỊóoỊốxBpJJgôỊWĐyƠôó]ẰĐrẲốĨpjốKĐLĨốỘAố;rố]ỆẲ-]ẲDẶốWÂDẶốyẲĂDốĨpốKÕốDẰrƠốộở-ổồ/ỗốxÒDẰốBrốCỆKốẶĐsKốýỆDẰốxẶẴDẶốKĨĐDẰốBẤxẶốKĨÂDẶốJÔốẪẲẢDkốYẲốKẴxẶjốxĐDốDẰỌHẲốéẲẢKố]pCốJAốýỌIxốBỌLốBsẲốKĨÁDốxqxốwỎxốẶẸpốxÓpốxqxốẶẸpốJỠốKẶpCốẰẲpjốẰEỊốỊẶựDốỈLtDẰốwqốẶÂDẶốtDẶjốỘúDốẶEpjốyLốBẤxẶốéẲẢKố]pCốýÀDốwsDốwèốỈLẾxốKÀk/ko/ỊóoỊốxBpJJgôỊWĐyƠôốJKƠBỳgôKỳỖK-pBẲẰDỉốĨẲẰẶKĩôóẳẶỳĐốẳẳẻé]o/Ịó