Conflicts between baseset-encoding elements are resolved
separately for each character number. There can be multiple
baseset-encoding elements for the same base character set, but
it shall be an error to have two specifications for the same character
number in the same base character set in a single part.
<baseset-encoding name="Character set for the Viking age runic script">
31 runic-f
32 runic-u
</baseset-encoding>