{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["Лист1","Лист2","Лист3"],"not_rendered":{"charts":1,"external_links":1},"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Лист1","index":0,"n_rows":11,"n_cols":4,"rows_kept":11,"flags":["formulas_cached_only"]}
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[null,"Якою мовою Ви читали книжки про Гаррі Поттера?"]
[]
[]
["Учні","Російською","Українською","Англійською"]
["1-4 класів",2,18,0]
["5-6 класів",5,15,0]
["7-9 класів",8,11,1]
["10-11 класів",12,5,3]

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{"sheet":"Лист3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}