Four-Four-Four-Four! This is the sequel to one of my previous challenges, Three-Three-Three!

Write a program (or function, or snippet) that takes no input and produces an output according to the following four Conditions.

Both the program and the output must be written such that:

At least 16 distinct characters appear (since 16 = 4 × 4).
The number of occurrences of each character is a multiple of 4.

Also:

The program and the output must not be the same (because programs consisting of a single literal like 1111222233334444 are quite boring).

Finally, the program:

Cannot be written as a string repeated 4 times (e.g. f();f();f();f();, 123412341234).


It's code-golf! In anticipation of a multi-way tie for 64 bytes, the first submission whose output also satisfies Condition 4 will be the winner.
Notes

You are encouraged not to use comments to satisfy Conditions 1 and 2.
Feel free to embed wild bananas in your variable names as you see fit.
CJam, 16 bytes
4,4,4,4,@@@@\\\\

Try it online!