Great theories. Here is the exact format I wrote it in, but I changed all the characters. I do remember maybe converting it to hex or binary, or at least considering it.
0486 | 4AE5 | 41BC
A58F | 3FBA | 1AD7
34F6 | 2AEB
37A4 | 4AAF
7?A4 | ?42? | 6F?? | ??D8
71?D | 6?A? | ?FCA | 86B?
32?F
7F?B
Would writing it this way help a bit?
32?F
7F?B
34F6 | 2AEB
37A4 | 4AAF
0486 | 4AE5 | 41BC
A58F | 3FBA | 1AD7
7?A4 | ?42? | 6F?? | ??D8
71?D | 6?A? | ?FCA | 86B?
The fact that you had exactly 3 elements on the first row, 2 on the second row, 4 on the third row and 1 on the last row could potentially be because you wanted to know their order afterwards.