use List::Util qw(first);
my @mappings = (
+ # space and time
# areas
[ 'MTK', qr{^(?:m²|qm|quadrat *meter|quadrat *metre)$}i ],
# durations
[ 'SEC', qr{^(?:s|sec|second|sek|sekunde)$}i ],
[ 'MIN', qr{^min(?:ute)?$}i ],
- [ 'MON', qr{^mon(?:th|at)?$}i ],
[ 'HUR', qr{^(?:h(?:our)?|std(?:unde)?)$}i ],
[ 'DAY', qr{^(?:day|tag)$}i ],
+ [ 'MON', qr{^mon(?:th|at|atlich)?$}i ],
+ [ 'ANN', qr{^(?:yearly|annually|jährlich|Jahr)?$}i ],
# mass
[ 'MGM', qr{^(?:mg|milli *gramm?)$}i ],