--- /dev/null
+#!/usr/bin/perl
+
+use v5.30;
+use strict;
+
+my $valid = 0;
+LINE:
+while (<>) {
+ chomp;
+ my %seen;
+ for my $w (split /\s+/) {
+ my $w1 = join('', sort split //, $w);
+ next LINE if $seen{$w1}++;
+ }
+ $valid++;
+}
+
+say $valid;
+