note zing AM its now what I want.Here's the output from the code given by anonymous <code> Got some? (["b", "c", "a"], { MATCHES => [] }) Got some? (["a", "c", "d"], { MATCHES => [] }) Got some? (["d", "e", "b"], { MATCHES => [["b", "e", "d"]] }) </code> But for T = [ a b c d ] I have induced = [ "b", "c", "a" ], [ "a", "c", "d" ]. <p>Similarly for T = [ b e d ] output should be = [ "d", "e", "b" ] .</p> 997085 997258