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#!/usr/bin/perl ... } ] };
... school => { 0 => { school_type => undef }, 1 => { ... } }, ...
s**lil*; $*=join'',sort split q**; s;.*;grr; &&s+(.(.)).+$2$1+; $; = qq-$_-;s,.*,ahc,;$,.=chop for split q,,,reverse;print for($,,$;,$*,$/)