[error] DEADLOCK/NODUP: no remaining values
            4031
      +---------
574B3 | 60159BA3
       -94184
        =====
        3485BB
       -359680
        ======
          B041A
         -574B3
          =====
          538013
         -58B2B1
          ======
            9274

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