?????????
      +----------
HUHYJ | RNRQNQRQN
       -QXQNM
        =====
        HRTNMQ
       -HQQLER
        ======
          QHQYR
         -PPPUL
          =====
          HNXHYQ
         -HLEUJU
          ======
            UELNN
           -NNULE
            =====
            ?????

base: 14
letters: EFHJLMNPQRTUXY
missing: F
difficulty: intermediate