# ASCII alphabet, minus easily confused stuff (l, o, O, 0, 1)
# and plus some "safe" punctuation
split('',
- 'abcdefghijkmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ23456789()#.,[]-_=+'
+ 'abcdefghijkmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ23456789#.,[]-_=+'
);
}