a14=Administration and management, tourism, rentals
a01=Agriculture and environment
a18=Arts, culture, recreation and sports
a06=Construction, public works and refurbishing
a03=Craftmanship and manufacturing
a16=Education and training
a04=Energy production and distribution
a11=Financial, insurance and related activities
a12=Habitat and housing
a09=Hospitality and food service activities
a20=Houshold activities, self-production, domestic work
a10=Information, communication and technologies
a21=International diplomacy and cooperation
a19=Membership activities, repairing and wellness
a02=Mining and quarrying
a13=Professional, scientific and technical activities 
a15=Public administration and social security
a05=Recycling, waste treatment, water cycle and ecological restoration
a17=Social services, health and employment
a07=Trade and distribution
a08=Transport, logistics and storage