Sort the classified string
Sort the classified string

This makes the trie-grondilu.pl example pass its test again.

Quinny/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,stmuk/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples,stmuk/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,Quinny/perl6-examples,stmuk/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples,shlomif/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples