code: def L(base):
      # L  Do not remove ending after u, x or s, unless s follows o
      c1, c2 = base[-2:]
      return c2 != "u" and c2 != "x" and (c2 != "s" or c1 == "o")
  
imports: from collections import defaultdict
label_desc: Use image node_id 12 for calling a global function with example usage: L(base) and returns: unknown