[error] DEADLOCK/NODUP: no remaining values
            078A
      +---------
50201 | A071A599
       -50201
        =====
        165B55
       -B5AB67
        ======
         136179
        -106344
         ======
          1A8359
         -130823
          ======
           B9720

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