8: Add solutions for section "enums".

Created by  Aaw9nJhsNmfzFih9mKyNw9mV8CgERXJkRa1kK1Kx3LQH  on August 6, 2021
VM5YRWSKKJXW66NEP75XDNYKWU6NWUG4IQU4W2AHGXUANHSP6HIQC
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