#Base64 index tables
0   string ABCDEFGHIJKLMNOPQRSTUVWXYZabcde
> 31 string fghijklmnopqrstuvwxyz0123456789
> 62 string +/                              Base64 standard index table

0   string ACEGIKMOQSUWYBDFHJLNPRTVXZacegi
> 31 string kmoqsuwybdfhjlnprtvxz0246813579
> 62 string \=+                             Base64 SerComm index table
