#!perl
map{chop;push@{$n{join"",sort split//}},$_}sort<>;@$_>1&&print"@$_\n"for sort{@$a<=>@$b||$$a[0]cmp$$b[0]}values%n;
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#!perl
chop&&push@{$n{join"",sort split//}},$_ for sort<>;@$_>1&&print"@$_\n"for sort{@$a<=>@$b||$$a[0]cmp$$b[0]}values%n;
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