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(let ((n 10) (a 0) (b 1))
  (tagbody
   ODAI-PT13-673
     (princ a)
     (setq n (1- n))
     (psetq a b
            b (+ a b))
     (when (> n 0)
       (princ ", ")
       (go ODAI-PT13-673))
     (terpri)))
Success #stdin #stdout 0s 203840KB
stdin
Standard input is empty
stdout
0, 1, 1, 2, 3, 5, 8, 13, 21, 34