make-char 'symbol weirdness

[Sam Steingold]

GNU Emacs 24.0.50.10 (x86_64-unknown-linux-gnu, GTK+ Version 2.10.4)
 of 2010-05-03

a->alpha : (make-char 'symbol 97) ==> 945
b->beta :  (make-char 'symbol 98) ==> 946
c->chi ??? (make-char 'symbol 99) ==> 967 ???!!!
d->delta:  (make-char 'symbol 100) ==>948

why??

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Sam Steingold (http://sds.podval.org/) on CentOS release 5.4 (Final)
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