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 | de-gaap-ci:is.netIncome.regular.operatingCOGS.grossOpProfit.netSales.statutoryDuties.education | domain-member | http://www.xbrl.de/taxonomies/de-gaap-ci/role/determinationOfTaxableIncomeSpecialCasesTableIncomeStatementForProfitOrganisationsAndUtilities |
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 | de-gaap-ci:is.netIncome.regular.operatingCOGS.grossOpProfit.netSales.statutoryDuties.projectPromotion | domain-member | http://www.xbrl.de/taxonomies/de-gaap-ci/role/determinationOfTaxableIncomeSpecialCasesTableIncomeStatementForProfitOrganisationsAndUtilities |
 | de-gaap-ci:is.netIncome.regular.operatingCOGS.grossOpProfit.netSales.statutoryDuties.projectSupport | domain-member | http://www.xbrl.de/taxonomies/de-gaap-ci/role/determinationOfTaxableIncomeSpecialCasesTableIncomeStatementForProfitOrganisationsAndUtilities |
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