i i i i i i i       ooooo    o        ooooooo   ooooo   ooooo
  I I I I I I I      8     8   8           8     8     o  8    8
  I  \ `+' /  I      8         8           8     8        8    8
   \  `-+-'  /       8         8           8      ooooo   8oooo
    `-__|__-'        8         8           8           8  8
        |            8     o   8           8     o     8  8
  ------+------       ooooo    8oooooo  ooo8ooo   ooooo   8

Welcome to GNU CLISP 2.49 (2010-07-07) <http://clisp.cons.org/>

Copyright (c) Bruno Haible, Michael Stoll 1992, 1993
Copyright (c) Bruno Haible, Marcus Daniels 1994-1997
Copyright (c) Bruno Haible, Pierpaolo Bernardi, Sam Steingold 1998
Copyright (c) Bruno Haible, Sam Steingold 1999-2000
Copyright (c) Sam Steingold, Bruno Haible 2001-2010

Type :h and hit Enter for context help.

[1]> (load "rbg.lsp")
;; Loading file rbg.lsp ...
;;  Loading file lp.lsp ...
;;  Loaded file lp.lsp
;; Loaded file rbg.lsp
T
[2]> (setf s (rbg-string))
(G B B R R R G B R R B B B B G B R R G G G B R R R)
[3]> (setf s (mutation s))
(G B B R B R G B R R B B B B G B R R G G G B R R R)
[4]> (setf s (mutation s))
(G B G R B R G B R R B B B B G B R R G G G B R R R)
[5]> (setf s (mutation s))
(G B G R B R G B R R B B B B G B R R G G G B G R R)
[6]> (setf s (mutation s))
(G B G R B R G B R R B B B R G B R R G G G B G R R)
[7]> (setf s (mutation s))
(G B G R B R R B R R B B B R G B R R G G G B G R R)
[8]> (bye)
Bye.