?????????
      -----------
QYWZT ) XPMMQNLHZ
       -QYWZT
        =====
        MZPTUN
       -MPYUXZ
        ======
         MZXNYL
        -MPYUXZ
         ======
          MLPLHH
         -MLRJNJ
          ======
            NUVQZ
           -LPYJJ
            =====
            ?????

base: 16
symbols: GHJLMNPQRTUVWXYZ
difficulty: medium
missing: G