[error] DEADLOCK/NODUP: no remaining values
[error] DEADLOCK/NODUP: no remaining values
            8B55
      +---------
B0858 | 73896A98
       -B0858
        =====
        6303AA
       -64B3BB
        ======
         990529
        -914085
         ======
          942B38
         -914085
          ======
           4A55B

base: 12
letters: 0123456789AB
difficulty: medium
restrictions: no multiplication