pull down to refresh

I did write the code in a way I split up each group of four characters. I have 20 blocks with 4 characters in each block. the first or last 10 blocks of 4 characters don't have any question marks, but the questions marks are all in the first or second half of the characters, depending on the way to read from top to bottom or bottom to top.
Below is the exact format including the location of the question marks, but I did change each character to something random and different than the original. When I get off work later I will try adding the 0x in front of each side, but still unsure of significance of the question marks.
0486 | 4AE5F | 41BC A58F | 3FB3A | 1AD7
34F6 | 2AEB9 37A4 | 4AE5F
7?A4 | ?42? | 6F?? | ??D8 71?D | 6?A? | ?FCA | 86B?
32?F 7F?B
Sorry, every block of characters is four, not five. That was an error in the example.
reply
Is it possible the question marks are words? Maybe taking a look at common word people make with hex will jog your memory. https://stjerneskinn.com/hexadecimal-words.htm
reply
Also, maybe you laid it out this way for a reason. The first word might be 7 letters?
DEFACED FACED
reply