Consider encoding: airtameg

[tmakarios]

Airtameg is a base 26 alphabetic encoding, designed to fit data relatively efficiently into Aztec Codes (which use 5 bits per character in long single-case alphabetic strings, before error-correcting codes are added). I'd suggest a as the code for airtameg since it represents 0 in airtameg (though it would still need to be stripped before decoding) and is the first character of its name.

Airtameg is specified as an instance of the more general chunky base b encodings, which provide a quick way to specify encodings of bytes into any alphabet of between 2 and 256 characters, instead of having to write a new specification for each new encoding scheme, going through all the details regarding endianness, leading zeros, etc.