(setq mazeList '(A A A B B B C C C))
(print mazeList)
(nsubstitute 'F 'a mazeList)
(nsubstitute 'L 'b mazeList)
(nsubstitute 'R 'c mazeList)
(print mazeList)
KHNldHEgbWF6ZUxpc3QgJyhBIEEgQSBCIEIgQiBDIEMgQykpCihwcmludCBtYXplTGlzdCkKKG5zdWJzdGl0dXRlICdGICdhIG1hemVMaXN0KQoobnN1YnN0aXR1dGUgJ0wgJ2IgbWF6ZUxpc3QpCihuc3Vic3RpdHV0ZSAnUiAnYyBtYXplTGlzdCkKKHByaW50IG1hemVMaXN0KQo=