docs: def character_from_structure(motivation):
      """Find a character for a given structure."""
      assert len(motivation) == 3
  
      _c = {
              "+": "⿰",
              "-": "⿱",
              '>': "⿱",
              "手": "扌",
              "人": "亻",
              "刀": "刂",
              "丝": "糹",
              "水": "氵",
              "0": "⿴",
              }
      structure = ''.join([_c.get(x, x) for x in motivation])
      return _cd.IDS.get(structure, '?')