% SZS status Theorem for word__concat__word_
% SZS output start Proof for word__concat__word_
  file('i/f/words/word__concat__word__T',ch4s_wordss_wordu_u_concatu_u_wordu_u_T)).
  file('i/f/words/word__concat__word__T',ah4s_wordss_wordu_u_joinu_u_wordu_u_T)).
  file('i/f/words/word__concat__word__T',ah4s_wordss_wordu_u_concatu_u_def)).
% SZS output end Proof for word__concat__word_
