21 steps
wm86337wm86337
               
                       signature
                   
                   32→52
                       rule
                   
                   
                       {{{1, 2}, {1, 2}, {3, 1}} -> {{1, 1}, {1, 4}, {2, 1}, {2, 4}, {4, 3}}}
{{{1, 2}, {1, 2}, {3, 1}} -> {{1, 1}, {1, 4}, {2, 1}, {2, 4}, {4, 3}}}