docs: def is_mirrable(d):
      '''
          d = {1:'a',2:'a',3:'b'}
      '''
      vl = list(d.values())
      lngth1 = vl.__len__()
      uvl = elel.uniqualize(vl)
      lngth2 = uvl.__len__()
      cond = (lngth1 == lngth2)
      return(cond)