% SZS status Theorem for NULL__LENG
% SZS output start Proof for NULL__LENG
  file('i/f/list/NULL__LENGTH',ah4s_lists_NULLu_u_EQ)).
  file('i/f/list/NULL__LENGTH',ah4s_lists_LENGTHu_u_NIL)).
  file('i/f/list/NULL__LENGTH',ch4s_lists_NULLu_u_LENGTH)).
% SZS output end Proof for NULL__LENG
