% SZS status Theorem for IS__PREFIX__NIL_
% SZS output start Proof for IS__PREFIX__NIL_
  file('i/f/rich_list/IS__PREFIX__NIL_c0',aHLu_TRUTH)).
  file('i/f/rich_list/IS__PREFIX__NIL_c0',ch4s_richu_u_lists_ISu_u_PREFIXu_u_NILu_c0)).
  file('i/f/rich_list/IS__PREFIX__NIL_c0',ah4s_richu_u_lists_ISu_u_PREFIXu_c0)).
% SZS output end Proof for IS__PREFIX__NIL_
