9b/lllqtUst48MMMxwBHz+wluFguNx5h3DnyKxfxFjNazwc0X
9b/lllqtxTElC8GLsftS2RKkAxI1MfQTIuNx5h3P4eoEphA31djsn
9b/lllqtyk/lC8MMMxwwwhcTAxlhNBl1ugoluNx5h3fjxud309RVeCIY
9b/lllqtcxP8MMMxBvFfOh8lLxQTfguNx5h3LKrE0maElw
9b/lllqtdx48MMMxw6h4+mol1ugoluNx5h3AKrdGQ9OCnW
9b/lllqtf2l48MMMxDxaxxz29OAHIuNx5h3wG2TEyFqu3RdBin
9b/lllqthPElC8MMMxw78QQ0bfaPlI14TfguNx5h30beTAmP1cfA+Z
9b/lllqtryA8GL2m2s9OQrxzotuIuNx5h3MUw/45uzMeC5ww

##</code><code>##

perl -lne 'chomp; undef %h; @p=split(//,$_); foreach $k (@p) { $h{$k}=$k; } print (sort keys(%h));' test-strings

##</code><code>##

+/034589BDFHKMNUXabcfghjlnqstuwxyz
/1234589ACEGIKLMNPQRSTbdefhjklnopqstux
/013589ABCIMNRTVYbcdefghjkloqtuwxy
/03589BEFKLMNOPQTabcfghlmqrtuvwx
+/1345689ACGKMNOQWbdghlmnoqrtuwx
/234589ABDEFGHIMNORTabdfhilnqtuwxyz
+/01345789ACEIMNPQTZabcefghlmqtuwx
/234589ACGILMNOQUbehlmoqrstuwxyz