????????
      +---------
ERGML | FNXGTQEQ
       -LNEQQ
        =====
        WUHWLQ
       -GQMGYL
        ======
         GFUXLE
        -GLWXNF
         ======
          GXMYYQ
         -GYHMNU
          ======
          ??????

base: 14
letters: EFGHLMNQRTUWXY
difficulty: medium