% SZS status Theorem for exists__rules_
% SZS output start Proof for exists__rules_
  file('i/f/llist/exists__rules_c0',ah4s_llists_existsu_u_def)).
  file('i/f/llist/exists__rules_c0',ch4s_llists_existsu_u_rulesu_c0)).
% SZS output end Proof for exists__rules_
